SOLUTION: Jack usually mows his lawn in 7 hours. Marilyn can mow the same yard in 6 hours. How much time would it take for them to mow the law together?
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Question 469559: Jack usually mows his lawn in 7 hours. Marilyn can mow the same yard in 6 hours. How much time would it take for them to mow the law together?
Answer by jorel1380(3719) (Show Source): You can put this solution on YOUR website!
1/7+1/6=1/t
6t+7t=42
13t=42
t=42/13 hours..
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