GMAT Quantitative: Ratios and Proportions 2

Question 1

The ratio of cats to dogs in a shelter is 5:3. If there are 40 animals total, how many are dogs?

Accepted Answer

15

Answer

24

Answer

12

Answer

18

Question 2

If a/b = 4/7, what is the value of (a+b)/b?

Accepted Answer

11/7

Answer

11/4

Answer

7/11

Answer

4/11

Question 3

Two numbers are in the ratio 3:5 and their sum is 64. What is the larger number?

Accepted Answer

40

Answer

24

Answer

32

Answer

45

Question 4

A recipe uses flour and sugar in the ratio 7:2. To make a batch with 21 cups of flour, how much sugar is needed?

Accepted Answer

6 cups

Answer

3 cups

Answer

9 cups

Answer

14 cups

Question 5

If 12 workers can build a wall in 10 days, how many days would 15 workers take (inverse proportion)?

Accepted Answer

8

Answer

12

Answer

9

Answer

7.5

Question 6

The ratio of x to y is 2:9. If y = 36, what is x?

Accepted Answer

8

Answer

16

Answer

4

Answer

18

Question 7

A map scale is 1:50,000. Two towns are 6 cm apart on the map. What is the actual distance in km?

Accepted Answer

3 km

Answer

30 km

Answer

0.3 km

Answer

300 km