SOLUTION: A pipe can fill a tank in 12 hours. Another pipe can do the same job in 6 hours. How long will it take them if they work together?

Algebra ->  Rate-of-work-word-problems -> SOLUTION: A pipe can fill a tank in 12 hours. Another pipe can do the same job in 6 hours. How long will it take them if they work together?      Log On


   



Question 935223: A pipe can fill a tank in 12 hours. Another pipe can do
the same job in 6 hours. How long will it take them if they work together?

Answer by josgarithmetic(39799) About Me  (Show Source):
You can put this solution on YOUR website!
Fill a Tank, uniform rates problem.
RT=J, for rate, time, job. One tank filled is one job.
Sum of the individual rates is the combined rate for all agents working simultaneously.

%281%2F12%29%2B%281%2F6%29
1%2F12%2B2%2F12
3%2F12
highlight%281%2F4%29, TANKSperHOUR; which means 4 hours to fill the tank.