SOLUTION: if it takes 1 man 3 hours to paint 1 room and it takes another man 4 hours to paint the same room, how long will it take both me to paint the same room?
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Question 225049: if it takes 1 man 3 hours to paint 1 room and it takes another man 4 hours to paint the same room, how long will it take both me to paint the same room? Answer by ankor@dixie-net.com(22740) (Show Source):
You can put this solution on YOUR website! if it takes 1 man 3 hours to paint 1 room, and it takes another man 4 hours to paint the same room,
how long will it take both men to paint the same room?
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Let t = time required when working together
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Let the completed job (painted room) = 1
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A typical "shared work" equation + = 1
Multiply by 12, get rid of the denominators
4t + 3t = 12
7t = 12
t =
t = 1.714 hrs working together; 1 hr .714(60) = 1 hr 43 sec
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Check solution in the shared work equation + =
.5714 + .4285 = .9999 ~ 1
