SOLUTION: A swimming pool can be filled in 15 hours if water enters through a pipe alone, or in 23 hours if water enters through a hose alone. If water is entering through both the pipe and

Question 990695: A swimming pool can be filled in 15 hours if water enters through a pipe alone, or in 23 hours if water enters through a hose alone. If water is entering through both the pipe and the hose, how long will it take to fill the pool 4/5 full?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A swimming pool can be filled in 15 hours if water enters through a pipe alone, or in 23 hours if water enters through a hose alone. If water is entering through both the pipe and the hose, how long will it take to fill the pool 4/5 full?
Pipe rate:: 1/15 job/hr
hose rate:: 1/23 job/hr
Together rate:: 1/x job/hr
-----------------
Equation:
x((1/15)+(1/23)) = 4/5
x(38/(15*23)) = 4/5
----
x = 18.47 hrs = 18 hr 28 min (time required)
============
Cheers,
Stan H.
--------
RELATED QUESTIONS
A swimming pool can be filled in 15 hours if water enters through a pipe alone, or in 23... (answered by josgarithmetic)

a swimming pool can be filled in 16 hours if water enters through a pipe alone, or in 23... (answered by josgarithmetic)

A swimming pool can be filled in 18 hours if water enters through a pipe alone, or (answered by josgarithmetic)

A swimming pool can be filled in 15 hours if water enters through a pipe alone. 23 hours... (answered by kevwill)

A swimming pool can be filled in 15 hours if water enters through a pipe alone, or in 22... (answered by Alan3354)

a swimming pool can be filled in 15 hours if water enters through a pipe alone, or in 22... (answered by lwsshak3)

A swimming pool can be filled in 15 hours if water enters through a pipe alone, or in... (answered by josgarithmetic)

A Swimming pool can be filled 15 hrs if water enters through a pipe alone, or in 23 hours (answered by josgarithmetic,josmiceli,MathTherapy)

A swimming pool can be filled in 12 hours if water enters through a pipe alone, or in 28... (answered by solver91311,ankor@dixie-net.com)