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3 years ago

5

Mary can paint a house by herself in 12 hours. john can paint a house by himself in 16 hours. how long would it take them to pai

nt the house if they worked together?

1 answer:

QveST [7]3 years ago

5 0

1/12+1/16=1/n
4/48+3/48=1/n
7/48=1/n
48=7n
n=48/7 hours to paint the house if they worked together
☺☺☺☺

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