Fleet-Sizing Estimate: 1-Ton Trucks for 24-Hour Grocery Delivery Across India
Company: LinkedIn
Role: Product Manager
Category: Product / Decision Making
Difficulty: medium
Interview Round: Other
You run a grocery delivery business, comparable to India's app-based grocery services such as Blinkit or Instamart, that delivers to customers anywhere in India within 24 hours of an order. Without looking up any data, estimate how many trucks with a 1-ton capacity the service needs. Build the estimate from assumptions you state and justify; for example, you can start from India's population of 1.4 billion people and a 25% market share for your business.
```hint Find what limits one truck
Before multiplying anything, decide which leg of the delivery network these trucks run and what caps the work one truck can do in a day: the load it carries, the trips it can fit in, or the stops it can make.
```
### Clarifying Questions
- Does the 25% share mean a quarter of all people in India buy their groceries from us, or a quarter of the online grocery market?
- Do the 1-ton trucks cover every leg (supplier to warehouse, warehouse to local hub, hub to door), or only some legs, with other vehicles on the rest?
- Does "anywhere in India within 24 hours" include rural areas, or mainly cities and towns?
- Should the answer be the trucks on the road on an average day, or the full fleet including spares for maintenance and peak days?
### What a Strong Answer Covers
- An explicit equation from customers to daily orders, daily tonnage and the daily capacity of one truck
- Every assumption labeled, with round numbers and a short justification (household size, order frequency, order weight, load factor, trips per day)
- A clear choice of which network leg the 1-ton trucks serve, and recognition of whether weight, volume, trips or stops limit a truck
- Correct arithmetic, a sanity check of the result, and a sensitivity range for the shakiest assumptions
- A buffer for peaks and downtime, kept separate from the base estimate
### Follow-up Questions
- How does the count change if these trucks also make every doorstep delivery?
- Demand roughly doubles in festival weeks. Do you size the fleet for the peak or handle it another way?
- Which single assumption would you validate first with real data, and how?
Overview: A product manager estimation question on sizing a fleet of 1-ton trucks for a grocery delivery service that reaches customers anywhere in India within 24 hours, starting from a 1.4 billion population and a 25% market share. It tests building a clear equation, labeling assumptions, finding the limiting constraint and sanity-checking the result.