SOLUTION: If two inlet pipes are both open, they can fill a pool in 1 hour and 12 minutes. One of the pipes can fill the pool itself in 2 hours. How long will it take the other pipe to fill
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Question 156846This question is from textbook
: If two inlet pipes are both open, they can fill a pool in 1 hour and 12 minutes. One of the pipes can fill the pool itself in 2 hours. How long will it take the other pipe to fill the pool itself? This question is from textbook
You can put this solution on YOUR website! If two inlet pipes are both open, they can fill a pool in 1 hour and 12 minutes.
One of the pipes can fill the pool itself in 2 hours. How long will it take the
other pipe to fill the pool by itself
;
Let x = time required by the other pipe
:
Change 1 hr 12 min to hrs: 1.2 hrs
;
Let the full pool = 1
; + = 1
Multiply equation by 2x
1.2x + 2(1.2) = 2x
:
1.2x + 2.4 = 2x
:
2.4 = 2x - 1.2x
:
2.4 = .8x
x =
x = 3 hrs
;
:
Check solution + =
.6 + .4 = 1; confirms our solution
