Evaluate Groupon's Impact on Restaurant's Profitability and Strategy

Quick Overview

Evaluates restaurant profitability from a Groupon-style voucher partnership under discount, commission, capacity, and incrementality assumptions. Strong answers model contribution margin, cannibalization, repeat value, and strategic deal terms.

Evaluate Groupon's Impact on Restaurant's Profitability and Strategy

Company: Capital One

Role: Data Scientist

Category: Analytics & Experimentation

Difficulty: medium

Interview Round: Onsite

##### Scenario You own a restaurant, and a Groupon-style deals website proposes selling discount vouchers (coupons) for your venue. You must decide whether partnering with the site improves profitability, then quantify the impact under several demand and pricing assumptions. Use these baseline operating numbers throughout: - 20 tables per day - $30 average spend (menu check) per table - Variable cost = 40% of menu spend - Fixed cost = $100 per day ##### Question 1. **Qualitative factors.** What business and financial factors (price elasticity, incrementality vs. cannibalization, capacity/timing, customer acquisition and lifetime value, brand impact, deal terms, etc.) would you evaluate before deciding to partner with the coupon site? 2. **Quantitative factors.** What quantitative levers would you model (per-segment contribution margins, redemption share, break-even spend, sensitivity to commission/check size)? 3. **Baseline profit.** Compute the current daily profit with no partnership. 4. **Break-even spend.** A voucher sells for $15 and is treated as $30 of in-restaurant credit; the site keeps a 40% commission. Any spend above the voucher face value is paid by the customer at the point of sale and is not commissionable. On a marginal basis, what minimum average spend per voucher table is needed to break even? (Also state the equivalent break-even if instead the 40% commission is applied to the full check value.) 5. **Initial decision.** Based on that break-even, would you join the site? Justify your answer. 6. **New scenario.** After joining you observe: 25 tables/day, of which 10 use a voucher; average spend rises to $36; variable cost still 40%; fixed cost still $100; voucher value $15; commission 40%. Compute the new total daily profit, and decide whether to keep working with the site. 7. **Interpretation.** Explain why profit can move in either direction even though both table count and average spend increased. 8. **Improvement tactics.** If the deal must run, suggest concrete tactics to raise profitability.

Quick Answer: Evaluates restaurant profitability from a Groupon-style voucher partnership under discount, commission, capacity, and incrementality assumptions. Strong answers model contribution margin, cannibalization, repeat value, and strategic deal terms.

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Jul 12, 2025, 6:59 PM
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Evaluating a Groupon-Style Deal for a Restaurant

You own a restaurant, and a Groupon-style deals website proposes selling discount vouchers for your venue. You must decide whether partnering with the site improves profitability and quantify the impact under different demand and pricing assumptions.

Use these baseline operating numbers throughout:

  • 20 tables per day
  • $30 average menu spend per table
  • Variable cost = 40% of menu spend
  • Fixed cost = $100 per day

Constraints & Assumptions

  • State the voucher mechanics, discount, commission, redemption rate, and whether customers spend above the voucher value.
  • Separate incremental customers from customers who would have visited anyway.
  • Consider capacity constraints and timing of demand.
  • Evaluate contribution margin, not revenue alone.

Clarifying Questions to Ask Guidance

  • What price does the customer pay for the voucher, and what share does the restaurant keep?
  • Are voucher customers incremental, cannibalized, or a mix?
  • Do voucher customers spend beyond the voucher value, tip, return later, or bring additional guests?
  • Is the restaurant capacity constrained during the voucher redemption period?

Part 1 - Qualitative Factors

What business and financial factors would you evaluate before partnering with the coupon site?

What This Part Should Cover Guidance

  • Include price elasticity, customer acquisition, incrementality, cannibalization, capacity, brand impact, deal terms, redemption timing, and customer lifetime value.
  • Discuss operational effects on service quality, staff load, and regular customers.
  • Consider whether the deal fills unused capacity or displaces full-price demand.

Part 2 - Quantitative Model

What levers would you model to estimate profitability?

What This Part Should Cover Guidance

  • Model revenue retained by the restaurant, variable cost, fixed cost, incremental spend, redemption rate, repeat rate, and capacity displacement.
  • Compute contribution margin per voucher customer and per full-price customer.
  • Compare daily profit with and without the deal under different demand scenarios.
  • Include sensitivity analysis for incrementality, upsell spend, commission, and repeat visits.

Part 3 - Strategic Recommendation

Explain how you would decide whether to run the deal and how to structure it.

What This Part Should Cover Guidance

  • Recommend running, rejecting, or testing the deal based on profitability and strategic fit.
  • Suggest constraints such as off-peak redemption, caps, minimum spend, limited inventory, or targeting new customers.
  • Include measurement for repeat visits, margin, customer satisfaction, and operational strain.

Follow-up Questions Guidance

  • How would the conclusion change if most voucher users are existing customers?
  • What if the deal fills empty tables on slow weekdays only?
  • How would you estimate customer lifetime value after voucher redemption?
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