Asked by Michael
Lisa can shovel her driveway in 30 minutes and Tom can shovel his driveway in 40 minutes. How long will it take them to shovel the driveway together?
Answers
Answered by
Steve
how much work is done each hour?
1/30 + 1/40 = 1/x
It will take them x hours working together.
Actually, the problem is very poorly worded, since the times are for shoveling their own driveways, and we have no idea which driveway they work on together.
1/30 + 1/40 = 1/x
It will take them x hours working together.
Actually, the problem is very poorly worded, since the times are for shoveling their own driveways, and we have no idea which driveway they work on together.
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