It takes 45 minutes for 4 people to paint 6 walls. How many minutes does it take 6 people to paint 7 walls?

Question

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Answer 1

it takes 45 minutes for 4 people to paint 6 walls

it takes 45 minutes for 1 person to paint 1 1/2 walls

it takes 45 minutes for 6 people to paint 9 walls (6 * 1 1/2=9)

it takes 5 minutes for 6 people to paint 1 wall (45/9=5)

it takes 5*7=35 minutes for 6 people to paint 7 walls