Review: Ratios and Proportions

Simplify the ratio:

40:15

• 5:3

• 8:3

• 20:10

• 80:30

Find the unit rate:

80 inches over 10 days

• 40 inches over 5 days

• 10 inches per day

• 0.125 inches per day

• 8 inches per day

Find the unit price:

3 ounces cost $2.73

• $0.91 per ounce

• $1.10 per ounce

• $0.27 per ounce

• $8.19 per ounce

Decide if the ratios form a proportion:

• Yes, the ratios form a proportion because they are equivalent.

• No, the ratios do not form a proportion because they are not equivalent.

Decide if the ratios form a proportion:

• Yes, the ratios form a proportion because they are equivalent.

• No, the ratios do not form a proportion because they are not equivalent.

Solve the proportion:

• n = 0.8

• n = 1.6

• n = 0.4

• n = 2.5

Solve the proportion:

• x = 3

• x = 1.5

• x = 0.67

• x = 0.33

If you can buy one bunch of seedless green grapes for $2, then how many can you buy with $16?

• 32 bunches

• 14 bunches

• 10 bunches

• 8 bunches

A frame is 4 in tall and 2 in wide. If it is enlarged to a width of 6 in, then how tall will it be?

• 3 inches

• 12 inches

• 8 inches

• 24 inches

Does the graph represent a proportional relationship?

• Yes, the graph is a straight line passing through the origin.

• No, the graph is not a straight line that passes through the origin.