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NARA [144]
3 years ago
6

It takes 40 minutes for eight people to paint four walls how many minutes does it takes 10 people to paint seven walls

Mathematics
1 answer:
sasho [114]3 years ago
8 0
8r(40)=4

r=1/80  that is the rate for each person...

10rt=7  using r we found before

10(1/80)t=7

t/8=7

t=56 minutes.
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