SOLUTION: Tobey can mow a lawn in 50 minutes. Working together, Tobey and Nick take only 30 minutes to mow the lawn. How long would it take Nick to mow the lawn alone? Not sure how to sta

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Question 343385: Tobey can mow a lawn in 50 minutes. Working together, Tobey and Nick take only 30 minutes to mow the lawn. How long would it take Nick to mow the lawn alone?
Not sure how to start when there are two unknown variables: D=R x T, but we don;t have D or R? HELP!
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
in the 30 min that they work together , Toby mows 30/50 or 3/5 of the lawn

this means that it takes Nick 30 min to mow 2/5 of the lawn