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Three pumps, X, Y, and Z. removed water from a tank. Pump X removed 5

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Three pumps, X, Y, and Z. removed water from a tank. Pump X removed 5 [#permalink] New post   02 Jun 2021, 08:56
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Three pumps, X, Y, and Z. removed water from a tank. Pump X removed 550 gallons, pump Y removed 1,250 gallons, and pump Z removed 1/3 of the total number of gallons removed by the three pumps combined. How many gallons of water did pump Z remove from the tank?

(A) 450
(B) 600
(C) 900
(D) 1,800
(E) 2,700

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Question part of the project GRE Quantitative Reasoning Daily Challenge - (2021) EDITION
GRE - Math Book
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Re: Three pumps, X, Y, and Z. removed water from a tank. Pump X removed 5 [#permalink] New post   02 Jun 2021, 20:32
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X = 550
Y = 1250

Total = x+y+z=1800+z

Z removed 1/3 of the total number of gallons removed by the three pumps combined

z=1800+z3

z=900

Answer C
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Re: Three pumps, X, Y, and Z. removed water from a tank. Pump X removed 5 [#permalink] New post   16 Jul 2022, 12:41
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Let the total volume of the tank = T

If Pump Z emptied one-third of the tank, then pumps A & B must have emptied two-thirds of the tank (as the total number of pumps is 3). Considering this, it can be deduced that:

2/3 of T = 550 (that pump A emptied) + 1250 (that Pump B emptied) = 1800

Hence, T = 2700

As pump Z emptied one-third of the total, therefore, it must have emptied 1/3 * 2700 = 900
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Re: Three pumps, X, Y, and Z. removed water from a tank. Pump X removed 5 [#permalink] New post   05 Apr 2024, 09:44
Hello from the GRE Prep Club BumpBot!

Thanks to another GRE Prep Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: Three pumps, X, Y, and Z. removed water from a tank. Pump X removed 5 [#permalink]
05 Apr 2024, 09:44
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