Working together, it takes two roofers 10 hours to put a new roof on a portable classroom. if the first roofer can do the job b

Question

2 years ago

12

y himself in 12 hours, how many hours will it take the second roofer to do the job by himself?

1 answer:

Vadim26 [7] · Answer 1 · 2023-04-17T09:48:35+03:00

7 0

Well it sounds like you would have to multiply by 2, which is the amount of roofers, then subtract 12.

10 x 2 = 20

20 - 12 = 8

Hope this helped.

Working​ together, it takes two roofers 10 hours to put a new roof on a portable classroom. if the first roofer can do the job b