SOLUTION: It takes Dan 3 hours to mow his lawn. His wife, Kim, takes 4 hours to mow the lawn. How long will it take them working together to mow the lawn?

Algebra ->  Rate-of-work-word-problems -> SOLUTION: It takes Dan 3 hours to mow his lawn. His wife, Kim, takes 4 hours to mow the lawn. How long will it take them working together to mow the lawn?      Log On


   



Question 471489: It takes Dan 3 hours to mow his lawn. His wife, Kim, takes 4 hours to mow the lawn. How long will it take them working together to mow the lawn?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Dan does 1/3 per hour.
Kim does 1/4 per hour.
Together, they do 1/3 + 1/4 per hour.
Can you finish it?