SOLUTION: Rick can mop the gym floor in 4 hours, and Ron can mop the gym floor in 3 hours. lf Rick and Ron work together, how long will it take them to mop the gym floor?

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Rick can mop the gym floor in 4 hours, and Ron can mop the gym floor in 3 hours. lf Rick and Ron work together, how long will it take them to mop the gym floor?      Log On


   

Question 1200177: Rick can mop the gym floor in
4 hours, and Ron can mop the
gym floor in 3 hours. lf Rick
and Ron work together, how
long will it take them to mop
the gym floor?
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
Working together, the rates are added.
1%2F4%2B1%2F3
3%2F12%2B4%2F12
7%2F12

The TIME, 12 hours for 7 floors
12%2F7
1%265%2F7
1 hour 43 minutes