Bluebook SAT Test Ratios, Rates, Proportional Relationships, and Units 16

Question 1

A 24-oz bottle of shampoo costs $6.00 and a 40-oz bottle costs $9.20. How many more cents per ounce does the smaller bottle cost?

Accepted Answer

2 cents/oz

Answer

Small: 600 ÷ 24 = 25 cents/oz; large: 920 ÷ 40 = 23 cents/oz; difference = 2 cents/oz.

Question 2

A pipe leaks 2.4 liters per hour. How many liters does it leak in 4 days and 6 hours?

Accepted Answer

244.8 liters

Answer

Total hours = (4 × 24) + 6 = 102 hours; leaked = 102 × 2.4 = 244.8 liters.

Question 3

In a park, 5 out of every 8 visitors use the walking trail. On a day with 1,040 visitors, how many used the trail?

Accepted Answer

650

Answer

5/8 × 1,040 = 650 visitors.

Question 4

A car traveled 216 miles on 8 gallons of gas. At the same rate, how many gallons does it need to travel 351 miles?

Accepted Answer

13 gallons

Answer

MPG = 216 ÷ 8 = 27; gallons for 351 miles = 351 ÷ 27 = 13 gallons.

Question 5

A student scored 78, 85, 92, and 79 on four tests. What score on the fifth test gives an average of exactly 85?

Accepted Answer

91

Answer

Total needed = 85 × 5 = 425; current total = 78 + 85 + 92 + 79 = 334; fifth score = 425 − 334 = 91.

Bluebook SAT Practice Test