SOLUTION: three pipes are used to fill a pool with water. individually they can fill the pool in 9 hours,6 hours,3 hours. how many minutes will it take to fill the pool if all three pipes ar
Algebra.Com
Question 892871: three pipes are used to fill a pool with water. individually they can fill the pool in 9 hours,6 hours,3 hours. how many minutes will it take to fill the pool if all three pipes are used simultaneously ?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
three pipes are used to fill a pool with water. individually they can fill the pool in 9 hours,6 hours,3 hours. how many minutes will it take to fill the pool if all three pipes are used simultaneously ?
---------------
Rates::
slowest pipe:: 1/9 job/hr
median pipe::: 1/6 job/hr
fastest pipe:: 1/3 job/hr
together rate: 1/x job/hr
----------------------
Equation:
1/9 + 1/6 + 1/3 = 1/x
-------
2x + 3x + 6x = 18
11x = 18
x = 18/11 = 1 7/11 hrs. (time to fill the pool working together)
==============
Cheers,
Stan H.
----------
RELATED QUESTIONS
there are three pipes that can fill a pool. pipe A can fill the pool in 8 hours. pipes A... (answered by Edwin McCravy)
Three water pipes are used to fill a swimming pool. The first pipe alone takes 4 hours to (answered by lwsshak3)
a swimming pool can be filled by 3 water pipes, A, B and C. Pipe C alone can fill the... (answered by lwsshak3)
Two pipes are used to fill a pool. One pipe can fill the pool in 3 hours while the other... (answered by ikleyn)
Two pipes are used to fill a pool. One pipe can fill the pool in 3 hours while the other... (answered by ikleyn)
A swimming pool has two inlet pipes. One of them can fill the pool in 5 hours, the other... (answered by josgarithmetic)
A backyard swimming pool has two fill pipes and a drain pipe. The pool fills in 9 hours... (answered by ankor@dixie-net.com)
ONE PIPE CAN FILL A POOL 1.25 TIMES FASTER THAN ANOTHER PIPE. WHEN BOTH PIPES ARE OPENED, (answered by Alan3354)
A cold water pipe can fill a swimming pool in 10 hours, and a hot water pipe can fill the (answered by stanbon)