GMAT Quantitative Reasoning Practice Test 2

Question : 94 of 100

Marks: +1, -0

The width of a cube is half the length and one third of the height. If the length of the cube is 4 meters, what is the volume of three identical cubes?

Validate

Solution:

Normalize all the dimensions to the width. Let the width be

X

. The length is twice the width, thus

2 X

.
The height is 3 times the width, thus

3 X

.
The volume of the cube is

=6 X^3

. The
length is equal to

4: 2 X=4, X=2

Volume

=6 × 8=48

.
The volume of two cubes will be 96 .

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