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?

Algebra ->  Inequalities -> 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?      Log On


   

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) About Me  (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..