The case library
Pick a case, read the prompt, and jump straight into the interview. Every case is a fully simulated MBB-style scenario.
How many coffee shops are in New York City?
Classic Fermi estimation. Decompose by population, demand frequency, and shop throughput.
Public EV charging points needed in Germany by 2030
Forward-looking sizing requiring stock-vs-flow logic, charger utilization, and policy-driven assumptions.
Regional airline margin decline
Operating margin has dropped from 12% to 4% over three years. Diagnose the root cause.
B2B SaaS — profitability collapsing despite revenue growth
ARR is up 25% YoY but EBITDA is more negative than ever. Find the profit leak.
Should a national grocer enter rapid (15-min) delivery?
Classic market entry: attractive market, capability fit, and a clear go/no-go recommendation.
European luxury house entering Southeast Asia
Strategic, qualitative-heavy entry case. Brand positioning, channel choice, and country sequencing.
Big pharma acquiring a mid-cap biotech
Synergy math, deal valuation, and a defensible recommendation on a $12B biotech acquisition.
Streaming service launching an ad-supported tier
Pricing case: where to set an ad-supported tier to maximize ARPU without cannibalizing premium subs.
How many electric delivery vans are on UK roads?
Size the active electric last-mile van fleet in the UK and pressure-test the penetration rate.
Size the paid video streaming market in India
Estimate annual paid streaming revenue in India by segmenting households, ARPU, and subscription overlap.
Quick-service chain — falling unit economics
A QSR chain's per-store EBITDA has dropped 30% in two years — diagnose the driver and propose a fix.
Regional bank — net interest margin compression
A US regional bank's NIM has compressed 80bps in 18 months — find the driver and recommend a response.
Cargo airline — yield collapse post-pandemic
A pure-play cargo carrier's yield has fallen 40% from peak — assess structural vs. cyclical drivers.
European neobank — entering Mexico
A European neobank is evaluating launch in Mexico — assess the opportunity and the entry mode.
Utility — building a public EV charging network in Spain
A European utility is evaluating a national rollout of public fast chargers in Spain — assess the play.
Insurer — launching pet insurance in Germany
A multi-line insurer is exploring a pet insurance launch in Germany — size the prize and design the entry.
PE platform — evaluating an HVAC add-on acquisition
A PE-backed HVAC platform is evaluating a $90M regional add-on — assess the deal and the synergy case.
Conglomerate — spinning off a cable network
A diversified media group is weighing a spinoff of its declining cable network — assess value and structure.
B2B SaaS — moving from seats to usage-based pricing
A B2B SaaS firm is considering a shift from per-seat to usage-based pricing — assess revenue and churn impact.
E-commerce retailer — warehouse automation business case
An online retailer is evaluating $120M of automation across its DCs — build the business case.