Question

8 cleaners can clean an office in 3 hours,if the block needs to be cleaned in 2 hours,how many cleaners will be needed?

Answer 1

12 cleaners are needed

Explanation:

When the no: of cleaners increases, the number of working hours will be reduced. So, this is indirect proportion.

No of cleaners = 3 * 8 / 2 = 3* 4 =12

12 cleaners are needed