Homework Help: math

Posted by Becky on Sunday, November 16, 2008 at 4:35am.

I have trouble solving word problems. Can you tell me the best approach to solve this word problem?

If Sally can paint a house in 4 hours, and John can paint the same house in 6 hours, how long will it take for both of them to paint the house together?

math - bobpursley, Sunday, November 16, 2008 at 7:20am
What is the rate of each working?
Sally=house/4hrs
John=house/6hours

combined rate= Sally rate + john rate
= house(1/4 + 1/6)=house (10/24)

housetogether=combindedrate(time

time=house/house(10/24)=24/10=2.4 hrs.

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