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Brent@GMATPrepNow wrote:Water is poured from a full 4-liter bucket into three identical glasses until all four containers (the one bucket and the three glasses) are each 2/5 full. What is the capacity, in liters, of one glass?
A) 4/5
B) 3/2
C) 2
D) 12/5
E) 5/2
Answer: C
Source: www.gmatprepnow.com
Difficulty level: 600
, 8/5 liters + 6X/5 liters = 4 liters and Water is poured from the 4-liter bucket until the bucket is 2/5 full.Brent@GMATPrepNow wrote:Water is poured from a full 4-liter bucket into three identical glasses until all four containers (the one bucket and the three glasses) are each 2/5 full. What is the capacity, in liters, of one glass?
A) 4/5
B) 3/2
C) 2
D) 12/5
E) 5/2
We could also do a little fun back-solving. Look at the answer choices. One of them is shining like a beacon of light and easy arithmetic. So test '2.' If each glass has a capacity of 2 liters, and each glass is 2/5 full, then each glass will contain (2/5)*2 = 4/5 liters. There are 3 of them, so that's 3 * (4/5) = 12/5 = 2 2/5 liters. There are a total of 4 liters, so the remaining 1 3/5 is left in the bucket. 1 3/5 = 8/5, and (8/5)/4 = 2/5, so we've got our answer, CBrent@GMATPrepNow wrote:Water is poured from a full 4-liter bucket into three identical glasses until all four containers (the one bucket and the three glasses) are each 2/5 full. What is the capacity, in liters, of one glass?
A) 4/5
B) 3/2
C) 2
D) 12/5
E) 5/2
Answer: C
Source: www.gmatprepnow.com
Difficulty level: 600
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