QUESTION: 389

The grade point average of one third of the classroom is 69; the grade point average of the rest is 60. What is the grade point average of the whole class?

61.
63.
65.
67.
It depends how many people are there in the class.

Answer(s): B

Explanation:

Because the number of people in the classroom is unknown, take 3. One person has 69 and the rest have 60. Their sum is 189.
189/3 students is 63.

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In the Hillside summer camp there are 50 children. 90% of the children are boys and the rest are girls. The camp administrator decided to make the number of girls only 5% of the total number of children in the camp. How many more boys must she bring to make that happen?

Answer(s): A

Explanation:

The total number of girls in the camp is (0.1 x 50 = 5). In order for 5 girls to be 5% there has to be a total number of 100 kids in the camp therefore the camp’s administrator should bring 50 more boys.

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QUESTION: 391

A and B are numbers between 1 and 9. If A = 4B than by what number is the two digit number BA not divisible?

Answer(s): C

Explanation:

You have two choices: 1) 4 = 4 x 1 2) 8 = 4 x 2.
In the first choice, (BA = 14) can be divided by all the numbers except 3. In the second choice, (BA = 28) can be divided by all the numbers except 3. Therefore, E is the answer.

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QUESTION: 392

If X percent of 2.5X are 3X, then X could be?

90.
120.
150.
170.
180.

Answer(s): B

Explanation:

X percent is X/100.
X percent of 2.5X is (X/100)(2.5X) = (X/100)(5X/2) = 3X divide both sides by X. (X/40) = 3 ---> X = 120.

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Free GMAT SECTION 2: QUANTITATIVE Exam Braindumps (page: 98)

QUESTION: 389

Explanation:

QUESTION: 390

Explanation:

QUESTION: 391

Explanation:

QUESTION: 392

Explanation: