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Question 981521: Sean takes 2 hours to paint a room . Frank takes double the time to paint the same room .
1) What fraction of the room does Sean paint in an hour ?
2) What fraction of the room does Frank paint in an hour ?
3) How long does it take Sean and Frank working together to psint this room ?
Answer by JulietG(1812)   (Show Source):
You can put this solution on YOUR website! If Sean takes 2 hours to paint the room, how much does he paint in 1 hour? 1/2
If Frank takes 4 hours to paint the room, how much does he paint in 1 hour? 1/4
Together, they paint 3/4 of the room in one hour, or 1/4 every 20 minutes.
4/4 would be 4times that, or 80 minutes.
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