guddo wrote:
When water is flowing into a certain pool at the rate of r gallons per hour, it takes 9 hours to fill the pool. In terms of r, how many hours will it take to fill the pool if water is flowing into the pool at the rate of r + 5 gallons per hour?
A.\(\frac{ 9(r +5)}{r}\)
B.\(\frac{ r +5}{9r}\)
C.\(\frac{ r}{r +5}\)
D.\(\frac{ 9r}{r +5}\)
E.\(\frac{ r}{9(r +5)}\)
Attachment:
2023-12-01_19-40-33.png
Total Capacity of the Pool is\( 9*r=9r\)
Increased efficiency of the Pipe is (r + 5)
So, Time required to fill the Pool will be\(\frac{9r}{(r+5)}\) , Answer must be (D)
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Statistics : Posted by Abhishek009 • on 01 Dec 2023, 07:27 • Replies 4 • Views 974