It takes 52 minutes for 5 people to paint 5 walls. how many minutes does it take 20 people to paint 20 walls?

52 min

Step-by-step explanation:

Given

5 people paint 5 walls in 52 minutes

Now if 1 person paints the 5 walls then time required will be 5 times  more

1 Person paint 5 walls in

For 20 walls person has to do 4 times the previous  walls

1 person paints 20 walls in

For 20 People time required will be 20 times less

i.e.

i believe the correct answer is b.