starprincessbianca starprincessbianca

03-04-2020
Mathematics

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It takes 36 minutes for 7 people to paint 4 walls. How many minutes dose it take for 9 people to paint 7 walls?

Respuesta :

gavin3458128637839 gavin3458128637839

03-04-2020

4 walls need 262 people/minutes (7)(36)
1 wall takes 63 people/minutes (262/4)
7 walls need 441 people/minutes (63)(7)
9 people could do that in 49 minutes (441/9)

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