GMAT Quantitative (Problem Solving) 2

Question 1

If a shirt is marked up 25% then discounted 20%, what is the net percent change from the original price?

Accepted Answer

No change

Answer

1.25 × 0.80 = 1.00, so the final price equals the original.

Question 2

A train travels 240 miles in 4 hours. At the same rate, how long to travel 420 miles?

Accepted Answer

7 hours

Answer

Rate is 60 mph, so 420 ÷ 60 = 7 hours.

Question 3

What is the value of 3! + 4!?

Accepted Answer

30

Answer

3! = 6 and 4! = 24, summing to 30.

Question 4

If x² = 49 and x < 0, what is x?

Accepted Answer

-7

Answer

The square roots of 49 are ±7, and only -7 is negative.

Question 5

A jar has 5 red and 3 blue marbles. What is the probability of drawing a red marble?

Accepted Answer

5/8

Answer

5 red out of 8 total gives 5/8.

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