ISEE Quantitative Reasoning 3

Question 1

A train travels 180 miles in 3 hours. At the same rate, how far will it travel in 5 hours?

Accepted Answer

300 miles

Answer

The speed is 60 mph, so in 5 hours it travels 60 × 5 = 300 miles.

Question 2

What is 15% of 240?

Accepted Answer

36

Answer

15% of 240 is 0.15 × 240 = 36.

Question 3

If x : y = 4 : 5 and y = 20, what is x?

Accepted Answer

16

Answer

Since y = 20 is 4 times 5, x = 4 × 4 = 16.

Question 4

Which of the following is a prime number?

Accepted Answer

29

Answer

29 has no divisors other than 1 and itself, while the others are composite.

Question 5

A rectangle has length 12 and width 7. What is its area?

Accepted Answer

84

Answer

The area is length times width, 12 × 7 = 84.

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