Estimate India's Yearly Paint Demand Across Homes, Buildings and Industry

Estimate how much paint is used in India. Unless the interviewer specifies otherwise, give a yearly figure. State the unit you choose, break the estimate into parts, label each assumption with a round number and a short reason, and sanity-check the result. ```hint Choose the unit and the big users first Before multiplying anything, decide whether you are estimating liters, tonnes or rupees, and which kinds of surfaces account for most of the paint. Then think about how often each kind of surface actually gets repainted. ``` ### Clarifying Questions - Should the answer be a volume in liters, a weight in tonnes, or a market value in rupees? - Does "paint" mean only decorative paint for homes and other buildings, or also industrial coatings for vehicles, machinery and infrastructure? - Should primers, wall putty, distemper and whitewash count as paint? ### What a Strong Answer Covers - A defined unit, time period and scope before any arithmetic. - A segmentation that covers the main sources of demand (repainting homes, new construction, other buildings, industry and vehicles) and identifies which dominates. - Each driver, such as households, painted area per home, liters per square meter and the repaint cycle, stated as a labeled round-number assumption with a reason. - Correct, easy-to-follow arithmetic and a sanity check against an independent anchor such as paint per person. - Awareness of which assumptions move the answer most, with a plausible range. ### Follow-up Questions - Which single assumption has the biggest effect on your answer, and how would you narrow it down? - How would you convert your volume estimate into the size of the market in rupees? - How would you expect the number to change over the next ten years, and why?