7th grade math counts

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User Generated

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Oht3060

Subject

Mathematics

Description

Ellie can paint a room in 2 hours, and Diedre can paint the same room in 4 hours. How many minutes will it take Ellie and Diedre, working together, to paint the room?

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Explanation & Answer

1/2 + 1/4=3/4 of the room is painted by the two in an hour

therefore, the two will take

1/(3/4)=1 1/3 hrs

they will take one and a third hours

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