Question

It takes 40 minutes for 8 people to paint 4 walls. How many minutes does it take 10 people to paint 7 walls?

Please include step-by-step explanation please! Also, could you please include the formula of how to solve it? Thanks!

Answer 1

it takes 15 minutes to 10 people paint 7 walls

Answer 2

Answer:

Let's first break it down to the time 8 people need for one wall. That would be 10 minutes, right? If one person would have to do it in stead of 8, you'd expect him to take 80 minutes. To paint 7 walls, he would nee 7x80 = 560 minutes. 10 people would do that 10 times faster, ie., 56 minutes.

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