Lesson eLearning

If 4 workers can complete a house in 12 days working 6 hours per day, how many days will 6 workers take to complete the same house working 8 hours per day?

medium 2 marks Class 8 · Mathematics · Direct and Inverse Proportions
Answer
6 days

The correct answer is 6 days — Divide total work by daily capacity: days.

Step-by-step solution

  1. Find total work: worker‑hours.
  2. Find daily work of new team: worker‑hours per day.
  3. Divide total work by daily capacity: days.
Common mistake: Ignoring hours per day when comparing teams

Concept tested: Inverse proportion with workers and hours

Published · How this solution was prepared and checked

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