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It takes 20 minutes for 5 people to paint 5 walls. How many minutes does it take 9 people to paint 9 walls
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5 votes
It takes 20 minutes for 5 people to paint 5 walls. How many minutes does it take 9 people to paint 9 walls

User Liam Hanninen
by
5.2k points

2 Answers

1 vote

5 people , 1 wall ~ 20/5 = 4 minutes

1 person, 1 wall ~ 4/5 minutes

9 people, 1 wall ~ (4/5) x 9 = (36/5) minutes

Therefore 9 people, 9 walls ~ (36/5) x 9

= 64.8 minutes

= 1h 4 min 48 s

User Ernest S Kirubakaran
by
5.7k points
5 votes

Answer:

It takes 20 minutes :)

Explanation:

User Dstibbe
by
5.5k points
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