SOLUTION: Will can paint six rooms in 12 hours working alone If his friend Matthew helps him together they can paint the six rooms in 7 hours How long would it take Matthew to paint the 6 ro

SOLUTION: Will can paint six rooms in 12 hours working alone If his friend Matthew helps him together they can paint the six rooms in 7 hours How long would it take Matthew to paint the 6 ro

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Question 719295: Will can paint six rooms in 12 hours working alone If his friend Matthew helps him together they can paint the six rooms in 7 hours How long would it take Matthew to paint the 6 rooms by himself
Answer by checkley79(3341) (Show Source): You can put this solution on YOUR website!
1/12+1/7=1/x
(12+7)/(12*7=1/x
19/84=1/x cross multiply.
19x=84
x=84/19
x=4.421 hours working together.
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