QUESTION: 193

The length of a cube is three times its width and half of its height. If the volume of the Cube is 13,122 Cm cubed. What is the height of the cube?

Answer(s): C

Explanation:

Normalize each dimension to the width of the cube (W).
The length is 3 times the width, therefore its 3W, which is half of the height (6W). The volume of the cube is 13,122 = 6W x 3W x W = 18W3 W3 = 729 W = 9.
The height of the cube is six times the width, therefore its 54 meters.

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QUESTION: 194

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?

Answer(s): A

Explanation:

Normalize all the dimensions to the width. Let the width be X. The length is twice the width, thus 2X.
The height is 3 times the width, thus 3X. The volume of the cube is = 6X3.
The length is equal to 4 2X = 4 X = 2 Volume = 6 x 8 = 48. The volume of two cubes will be 96.

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QUESTION: 195

Two brothers took the GMAT exam, the higher score is X and the lower one is Y.
If the difference between the two scores is equal to their average, what is the value of Y/X ?

3.
2.
½.
1/3.
There isn’t enough data to answer the question.

Answer(s): D

Explanation:

If the difference is equal to the average, then we could write the equation: X – Y = (X +Y)/2. X – 3Y = 0 Y/X = 1/3.

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QUESTION: 196

Two people measure each other’s height, the height of the taller person is H and the height of the other person is L. If the differences in their height are equal to their average height, what is the Value of H/L?

1/3.
½.
2.
3.
6.

Answer(s): D

Explanation:

If the difference is equal to the average, then we could write the equation: H – L = (H+L)/2. H – 3L = 0 H/L = 3.

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Free GMAT SECTION 2: QUANTITATIVE Exam Braindumps (page: 49)

QUESTION: 193

Explanation:

QUESTION: 194

Explanation:

QUESTION: 195

Explanation:

QUESTION: 196

Explanation: