If 25 schoolchildren each collect 0.8 litres of clean water from the Amrita river for 5 days, how many litres of clean water are collected in total?

Step-by-step solution

1. Step 1: A child collects 0.8 litre in one day.
2. Step 2: Over 5 days, one child collects $0.8\times 5=4$ litres.
3. Step 3: For 25 children, total water is $4\times 25=100$ litres.

Concept tested: Simple multiplication

Published 16 October 2026 · How this solution was prepared and checked