Question

In a school, on a clean village-day $150$ students takes $6$ hours to clean village, if $180$ students do this work, then find time taken to clean the village completely in hours is

Answer 1

It can be noticed that as the number of students increases then the time taken to clean the village will decrease and vice-versa.

Therefore, the given relation is in inverse proportion.

Time taken by the $150$ students to clean the village $=6hours$

Time taken by the $1$ student to clean the village $=6\times 150=900hours$

Time taken by the $180$ students to clean the village $=\frac{900}{180}=5hours$