IAAT Ratios and Proportional Reasoning 2

Question 1

In a proportion, if a/b = c/d, which of the following must also be true?

Accepted Answer

a × d = b × c

Answer

a + b = c + d

Answer

a − b = c − d

Answer

a ÷ c = d ÷ b

Question 2

A store sells 3 apples for $1.20. At this rate, how much do 10 apples cost?

Accepted Answer

$4.00

Answer

$3.60

Answer

$3.80

Answer

$4.20

Question 3

The ratio of red marbles to blue marbles is 2:7. If there are 63 blue marbles, how many red marbles are there?

Accepted Answer

18

Answer

14

Answer

16

Answer

21

Question 4

Which table of values shows a proportional relationship?

Accepted Answer

x: 1,2,3 | y: 2,4,6

Answer

x: 1,2,3 | y: 3,5,7

Answer

x: 1,2,3 | y: 1,3,6

Answer

x: 1,2,3 | y: 4,6,8

Question 5

If 12 workers can complete a job in 8 days, how many days will 6 workers need to complete the same job?

Accepted Answer

16 days

Answer

4 days

Answer

12 days

Answer

24 days

Question 6

A photograph is enlarged so that the new width is 15 inches. The original photo was 5 inches wide and 8 inches tall. What is the height of the enlarged photo?

Accepted Answer

24 inches

Answer

18 inches

Answer

20 inches

Answer

25 inches

Question 7

The ratio 8:12 is the same as:

Accepted Answer

2:3

Answer

1:2

Answer

3:4

Answer

4:6