SOLUTION: One pipe fills a pool in 6 hours. Second pipe can fill the same pool in 4 hours. How long would it take to fill the pool if both pipes were working.

Question 378384: One pipe fills a pool in 6 hours. Second pipe can fill the same pool in 4 hours. How long would it take to fill the pool if both pipes were working.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
One pipe fills a pool in 6 hours. Second pipe can fill the same pool in 4 hours. How long would it take to fill the pool if both pipes were working.
------
1st pipe rate = 1/6 job/hr
2nd pipe rate = 1/4 job/hr
Together rate = 1/x job/hr
--------------------------------
Equation:
rate + rate = together rate
1/6 + 1/4 = 1/x
2x + 3x = 12
5x = 12
x = 12/5 hrs = 2.4 hrs (time to fill the pool if both pipes are working)
=======================
Cheers,
Stan H.
RELATED QUESTIONS
One pipe fills a pool in 6 hours . A second pipe can fill the same pool in 4 hours, how... (answered by stanbon)

one pipe fills a pool in 6 hours. a second pipe can fill the same pool in 4 hours. how... (answered by scott8148)

One pipe fills a pool in 4 hours. A second pipe, used to drain the water from the pool,... (answered by richwmiller)

A pipe can fill a pool in 9 hours. If a second pipe is also used, the pool can be filled (answered by Alan3354)

A pool can be filled with one pipe in 8 hours, whereas a second pipe requires 20 hours to (answered by richwmiller)

a pool can be filled by one particular pipe in 10 hours, whereas a different pipe... (answered by Earlsdon)

Pipe A fills the pool in 8 hours, pipe B fills the pool in 12 hours. If pipe A runs for... (answered by macston)

One pipe can fill a pool in 9 hours and another pipe can fill the same pool in 12 hours.... (answered by mananth,MathTherapy)

one inlet pipe can fill a pool by itself in 3 hours. Another pipe can fill the pool in 4... (answered by richwmiller)