Bluebook SAT Test Ratios, Rates, Proportional Relationships, and Units 8

Question 1

A painting crew can paint a house in 6 days working 8 hours a day. How many days would it take if they worked 12 hours a day instead?

Accepted Answer

4

Answer

3

Answer

5

Answer

6

Question 2

Oil and vinegar are mixed in a ratio of 2:5 in a salad dressing. If the total volume is 280 mL, how many mL of oil are in the dressing?

Accepted Answer

80 mL

Answer

60 mL

Answer

70 mL

Answer

90 mL

Question 3

A car's fuel efficiency is 32 miles per gallon. If gas costs $3.60 per gallon, what is the fuel cost for a 400-mile trip?

Accepted Answer

$45.00

Answer

$40.00

Answer

$42.50

Answer

$44.50

Question 4

The ratio of red marbles to blue marbles is 3:2. If 5 red marbles are added, the ratio becomes 2:1. How many blue marbles are there?

Accepted Answer

10

Answer

8

Answer

12

Answer

15

Question 5

If 1 foot = 30.48 cm, what is 5 yards in centimeters? (1 yard = 3 feet)

Accepted Answer

457.2 cm

Answer

396.24 cm

Answer

427.36 cm

Answer

487.68 cm

Question 6

A 500 mL bottle of juice is 30% real juice. A 1,000 mL bottle is 45% real juice. What percent of the combined mixture is real juice?

Accepted Answer

40%

Answer

38%

Answer

41%

Answer

42%

Question 7

A 60-liter solution is 35% alcohol. How many liters of pure alcohol must be added to make a 50% alcohol solution?

Accepted Answer

18 L

Answer

14 L

Answer

16 L

Answer

20 L