A product manager at a delivery platform is sizing a city before a pricing change. Bengaluru's population is roughly 1.3 crore (13 million).
Estimate daily food delivery orders in Bengaluru across all platforms. Build it from the user side, then cross-check it from the supply side.
100 points, 60% to pass.
Demand side: smartphone-owning population × share who order online × orders per week ÷ 7. Supply side as the cross-check: number of listed restaurants × orders per restaurant per day. The two should land within a factor of two; saying so, and explaining a gap, is worth more than either number alone.