SOLUTION: Hi, I am kind of stuck on this question. I keep getting 1/7 but that doesn't make sense to me. Maybe it's right but i doubt it. Your little sister can shovel the driveway in 90 m

SOLUTION: Hi, I am kind of stuck on this question. I keep getting 1/7 but that doesn't make sense to me. Maybe it's right but i doubt it. Your little sister can shovel the driveway in 90 m

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Question 963314: Hi, I am kind of stuck on this question. I keep getting 1/7 but that doesn't make sense to me. Maybe it's right but i doubt it.
Your little sister can shovel the driveway in 90 minutes and it usually takes you two hours. How long will it take if both of you work together (with separate shovels)?
Thanks for the help!
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
How do you get 1/7 ?
1/7 of what?

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