07-09-2017
Mathematics

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Tommy can paint a fence in 7 hours. If his friend Huck helps, they can paint the fence in 1 hour. How fast could Buck paint the fence by himelf?

Respuesta :

kphung76127 kphung76127

07-09-2017

If Tommy can paint a fence in 7 hours, he paints 1/7 of a fence in 1 hour.
If Huck and Tommy get one fence done in an hour, Huck must be able to complete 1-(1/7)=6/7 of a fence in one hr.

6/7x=1
x=7/6

Final answer: 1 hour, 10 minutes

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