SOLUTION: PLease help me solve this word problem:
It takes Sal 5 hours to paint a house. It takes Al 3 hours to paint the same house. How long will it take to paint the house if both of t
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-> SOLUTION: PLease help me solve this word problem:
It takes Sal 5 hours to paint a house. It takes Al 3 hours to paint the same house. How long will it take to paint the house if both of t
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Question 234247: PLease help me solve this word problem:
It takes Sal 5 hours to paint a house. It takes Al 3 hours to paint the same house. How long will it take to paint the house if both of them work together?
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You can put this solution on YOUR website! It takes Sal 5 hours to paint a house. It takes Al 3 hours to paint the same house. How long will it take to paint the house if both of them work together?
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Let h = hours it takes for both to work together to paint a house
then
h(1/5 + 1/3) = 1
h/5 + h/3 = 1
Multiply by a common denominator (say 15):
3h + 5h = 15
8h = 15
h = 15/8 hours
h = 1 and 7/8 hours
or
h = 1 hour and 52.5 minutes
