hutch49mxosw2ln
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  • 17-07-2017
  • Mathematics
contestada

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

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irspow
irspow irspow
  • 17-07-2017
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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