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

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 7:20amWhat 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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