Question

If 2 people can repair a room in 12 days .tell how long would it take for 3 people for repairing the same room ???

Answer 1

Number of days taken by 2 people = 12 days

Number of days taken by 1 person = 12 × 2 days( inverse proportion)

Thus, Number of days taken by 3 people = 12 × 2/3 = 8 days

Hope it might help you ;)

Answer 2

Hi friends, here is your answer :-

We know that if people are more it takes less time and if people are less it takes more time to complete the work.

That means People indirectly proportional to days.

Indirectly proportional=> xy=x'y'

=> 2×12= 3×x

=> x= 12×2/3= 4×2 = 8

Therefore it takes 8 days with 3 people.

HOPE IT HELPED YOU............