Lesson eLearning

A small river carries 5 km of water in 2 hours. How many km will it carry in 6 hours, assuming the flow rate is constant?

medium 2 marks Class 4 · EVS · A River Tale
Answer
15 km

The correct answer is 15 km — Answer: 15 km.

Step-by-step solution

  1. The flow rate is 5 km ÷ 2 h = 2.5 km/h.
  2. Time = 6 h.
  3. Distance = rate × time = 2.5 km/h × 6 h = 15 km.
  4. Answer: 15 km.
Common mistake: Multiplying by 3 instead of 6/2

Concept tested: Proportionality of flow

Published · How this solution was prepared and checked

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