Interviewer-led case
Profit down on flat revenue: a coffee chain, strong and weak
An interviewer-led profitability case run twice: once by a candidate who uses flat revenue to go straight to cost, and once by a candidate who brings a framework, freezes on the break-even math and closes with a recap.
A written example. Not a recording of a real candidate.
Before you read
The case: Harqeen Coffee runs 150 stores in the UAE and Saudi Arabia. Last year it made AED 10 million of profit on AED 100 million of revenue. This year revenue was again AED 100 million, but profit fell to AED 8 million. The chief executive wants to know why and what to do.
The format: interviewer-led. The interviewer asks the questions in order and shows one exhibit. The same case is run twice: the strong run and the weak run sit side by side on a wide screen and one after the other on a phone. Each note under a candidate line scores one criterion from 1 to 5 on the Partner mode rubric.
Study the worked case: Harqeen Coffee: profit down 20 percent
1. The opening
What the interviewer is looking for: A playback of the problem with its numbers, the goal, and only the two or three questions needed to build a structure.
Strong run
Interviewer: Our client is Harqeen Coffee, a chain of 150 stores in the UAE and Saudi Arabia. Last year it made AED 10 million of profit on revenue of AED 100 million. This year revenue was again AED 100 million, but profit fell to AED 8 million. The chief executive wants to know why, and what to do.
Candidate: Let me play that back. Revenue held at AED 100 million, and profit fell from AED 10 million to AED 8 million, a 20 percent fall, so margin went from 10 to 8 percent. We want the cause and a fix. Two questions: is the goal to get back to AED 10 million next year? And did the number of stores change between the two years?
Communication 5 of 5: Plays the problem back with the numbers, sizes the fall, and asks two questions that shape the structure.
Interviewer: Yes, back to AED 10 million next year. Same 150 stores in both years.
Candidate: Thank you. And are competitors seeing the same pressure on profit?
Interviewer: Their profits are also under pressure, but we have no detail yet.
Weak run
Interviewer: Our client is Harqeen Coffee, a chain of 150 stores in the UAE and Saudi Arabia. Last year it made AED 10 million of profit on revenue of AED 100 million. This year revenue was again AED 100 million, but profit fell to AED 8 million. The chief executive wants to know why, and what to do.
Candidate: OK. Could you tell me more about the company first? Who are the customers, what do they sell, and who are the main competitors?
Communication 2 of 5: No playback and no goal. Three broad questions that would fit any company, and none about this problem.
Interviewer: What do you need to know to solve this problem?
Candidate: Just some general background, like how many customers come in each day.
Interviewer: We do not have that. Let us move on.
2. The structure
What the interviewer is looking for: A structure built for this problem. Flat revenue points to cost, so the interviewer wants a hypothesis, a reason for it, and a first step, not a list of frameworks.
Strong run
Candidate: May I take a moment to structure my thoughts?
Interviewer: Go ahead.
Candidate: Profit fell AED 2 million while revenue stayed at AED 100 million, so cost must have risen by AED 2 million. My hypothesis is an input cost, most likely coffee beans, because they are a traded commodity whose price moves a lot. I would split cost into its buckets to find the one that moved, and then split that bucket into cups sold, grams per cup and price per kilogram. Could I see a cost breakdown for both years?
Structuring 5 of 5: Uses the flat revenue to go straight to cost, states a hypothesis with a reason, and names the first step and the data it needs.
Weak run
Candidate: I would use the three Cs and the four Ps. For customers, I would look at who they are and whether tastes are changing. For competitors, whether new coffee chains opened nearby. For the company, its product, price, place and promotion.
Structuring 1 of 5: A memorized framework that ignores the one fact given: revenue is flat, so the answer sits on the cost side.
Interviewer: Where would you start?
Candidate: With customers, because profit comes from customers.
3. The exhibit
What the interviewer is looking for: The one number that matters, and what it means for the client, in one or two sentences.
Strong run
Interviewer: Here is the cost breakdown, in AED millions: rent 14 in both years, wages 30, coffee beans 8 last year and 10 this year, milk and other ingredients 12, and other costs 26. What do you see?
Candidate: Total cost went from AED 90 million to AED 92 million. Every bucket is flat except coffee beans, which rose from AED 8 million to AED 10 million. That AED 2 million is the whole profit fall, so my hypothesis holds, and the question becomes why bean cost rose.
Exhibit reading 5 of 5: Finds the one bar that moved, ties it to the profit fall, and says where to go next.
Weak run
Interviewer: Here is the cost breakdown, in AED millions: rent 14 in both years, wages 30, coffee beans 8 last year and 10 this year, milk and other ingredients 12, and other costs 26. What do you see?
Candidate: Rent is 14 and 14. Wages are 30 and 30. Coffee beans went from 8 to 10. Milk is 12 and other is 26. So most costs are the same.
Exhibit reading 2 of 5: Reads the chart aloud without the so-what: the bean rise of AED 2 million equals the whole profit fall.
Interviewer: So what does it tell you?
Candidate: That costs are high, so they should cut costs, maybe wages, because wages are the biggest bucket.
Exhibit reading 1 of 5: Picks the biggest bucket instead of the one that moved. Wages were flat at AED 30 million.
4. Ask, do not assume
What the interviewer is looking for: Does the candidate check the facts behind the number instead of assuming them, and do the math cleanly, with units and a meaning?
Strong run
Candidate: Bean cost is cups sold times grams per cup times price per kilogram. Flat revenue does not prove cups were flat, because a price rise could hide fewer cups. So may I ask: did the average price per cup or the number of cups change? And did the recipe or cup size change?
Structuring 5 of 5: Breaks bean cost into its three drivers and asks for the facts instead of assuming them.
Interviewer: Both are flat. And no, the recipe did not change.
Candidate: Then the whole rise is the price per kilogram. From 8 to 10 is a rise of 2 on a base of 8, so bean prices rose about 25 percent. This is an input-price problem, not a demand or pricing problem.
Math 5 of 5: The right growth rate on the right base, with what it means for the diagnosis.
Weak run
Candidate: I think bean cost went up because they sold more coffee.
Interviewer: Revenue was flat. Did they sell more?
Candidate: Oh, right. Then the price of beans went up. By 2 percent, I think, since it went up by 2.
Math 1 of 5: Confuses the AED 2 million rise with a percentage. The rise is 2 on a base of 8, which is 25 percent.
5. Sizing the fix
What the interviewer is looking for: Size the fix and its risk with clear, narrated math. A strong candidate states units and says what each number means.
Strong run
Interviewer: Competitors face the same bean prices. How much would Harqeen need to raise prices to recover the profit, and how far could cups fall before that stops paying?
Candidate: To recover AED 2 million on AED 100 million of revenue with the same cups, the average price rises 2 percent. For the risk: variable costs are beans at 10 and milk and ingredients at 12, so contribution is AED 78 for every AED 100 of revenue today. After a 2 percent rise it is AED 80 for the same cups. The rise still adds profit unless cups fall by more than the gap between 78 and 80 as a share of 80, which is about 2.5 percent.
Math 5 of 5: Both answers right, with units, narrated step by step, and the break-even stated as a risk the client can watch.
Weak run
Interviewer: Competitors face the same bean prices. How much would Harqeen need to raise prices to recover the profit, and how far could cups fall before that stops paying?
Candidate: Sorry, give me a second. So 2 million over 100 million is 2 percent. They should raise prices by 2 percent.
Math 3 of 5: The right price rise, but slow, and without saying what it means or what could go wrong.
Interviewer: And how far could cups fall before that rise stops paying?
Candidate: Maybe 20 percent? I am not sure how to work that out.
Math 1 of 5: Freezes and guesses. With contribution of AED 78 per AED 100 today and AED 80 after the rise, cups can fall only about 2.5 percent.
6. The recommendation
What the interviewer is looking for: The answer first, then two or three reasons with numbers, the main risk and the next steps, in about a minute.
Strong run
Interviewer: The chief executive has just walked in. What do you recommend?
Candidate: Recover the bean cost rather than chase demand. First, the whole AED 2 million profit fall comes from coffee beans, whose price per kilogram rose about 25 percent while cups, prices and the recipe held. Second, rivals face the same bean prices, so a 2 percent average price rise is realistic, and it recovers the full AED 2 million if cups hold. Third, it still adds profit unless cups fall by more than about 2.5 percent. So I would fix part of next year's bean cost through longer supplier contracts or hedging, and pilot a 2 percent price rise in 10 stores for six weeks while tracking cups sold. The main risk is that customers are more price-sensitive than we think, and the pilot tests exactly that.
Synthesis 5 of 5: Answer first, three reasons with numbers, the main risk, and a pilot that tests it.
Weak run
Interviewer: The chief executive has just walked in. What do you recommend?
Candidate: So, to sum up, we looked at the customers and then the costs, and we saw costs went up, mainly beans. So they could raise prices, cut wages, and do more marketing to bring in more customers.
Synthesis 1 of 5: A recap of the steps, not an answer. Cutting wages and more marketing both contradict the data.
Interviewer: Which of those first, and by how much?
Candidate: Probably all three together, to be safe.
Communication 2 of 5: No priority and no size, so the chief executive cannot act on it.
The interviewer's scorecards
Each criterion is scored from 1 to 5, the same scale as the Partner mode rubric, for a total out of 25.
Strong run
24 of 25Strong performance
- Structuring5 of 5
- Built for the problem: flat revenue, so cost; a hypothesis with a reason; a clear first step.
- Math5 of 5
- The bean-price rise and the break-even fall in cups both right, on the right bases, each with its meaning.
- Exhibit reading5 of 5
- Found the one bar that moved and tied it to the profit fall at once.
- Synthesis5 of 5
- Answer first, three reasons with numbers, a risk and a pilot.
- Communication4 of 5
- Clear and signposted. Could have checked in once before the longer piece of math.
Verdict: Ready for this case type: the answer was clear by the exhibit, and every number was used.
Weak run
8 of 25Early stage: focus on the lowest criterion first
- Structuring1 of 5
- A generic framework that never used the flat revenue.
- Math2 of 5
- Confused a change in AED millions with a percentage and froze on the break-even.
- Exhibit reading2 of 5
- Read every bar aloud, then picked the biggest bucket instead of the one that moved.
- Synthesis1 of 5
- A recap with three actions, two of which the data contradicts.
- Communication2 of 5
- Broad questions at the start and no priority at the end.
Verdict: Early stage: learn the revenue versus cost split first, then practice contribution and break-even until they are automatic.
What separated the two runs
- The strong run used the one fact in the prompt, flat revenue, to go straight to cost. The weak run brought a framework and never used it.
- Both runs saw the same exhibit. Only the strong run said what it meant: beans explain the whole AED 2 million.
- The weak run froze on the break-even math. Short daily practice on contribution and break-even in the Math gym fixes that faster than more full cases.
- The strong close gave an answer, reasons with numbers, a risk and a pilot. The weak close retold the case.
Now try it
- Run it in the simulator
The same case, typed, graded by the published rules.
- Run it with a partner
Partner mode: your partner reads the case and scores you on the same five criteria.
- Answer it out loud
In the simulator, press "Answer out loud" on the structure and the close, where your device supports it. Your voice stays on your device.