SOLUTION: Tommy can paint a fence in 9 hours. If his friend Huck​ helps, they can paint the fence in 1 hour. How fast could Huck paint the fence by​ himself?
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Question 1064816: Tommy can paint a fence in 9 hours. If his friend Huck helps, they can paint the fence in 1 hour. How fast could Huck paint the fence by himself? Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Their rate painting together is:
[ 1 fence painted ] / [ 1 hr ]
Tommy's rate painting alone is:
[ 1 fence painted ] / [ 9 hrs }
Let Huck's rate of painting =
[ 1 fence painted ] / [ t hrs ]
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Add their rates of painting to get their rate
painting together
Multiply both sides by hrs
convert hrs to min
Convert min to sec
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By himself, Huck can paint the fence in 1 hr 7 min 30 sec
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check:
OK
