Question

It takes 212121 minutes for 555 people to paint 777 walls. How many minutes does it take 333 people to paint 555 walls?

Answer 1

25 :)

Explanation:

Answer 2

Solution: We are given that:

5 people can paint 7 walls in 21 minutes

Therefore, 1 person can paint 7 walls in
`21 * 5=105` minutes

Which means 1 person can paint 1 wall in
`(105)/(7) =15` minutes

Now, 3 people can paint 1 wall in
`(15)/(3) =5` minutes

Therefore, 3 people can paint 5 walls in
`5 * 5=25` minutes