Ratios, Rates and Unit Rates

Which of these is NOT a ratio?

• 6:9

• 5 = 7

• 3 out of 4

• 5/7

Which ratio is equivalent to a 12 to 4 ratio?

• 6:3

• 3 to 1

• 4 to 12

• 1 to 3

A parent's age and child's age is a 5:2 ratio, how old is the child if the parent is 50?

• 20

• 30

• 40

• 50

Emily bought 32 apples and 21 carrots. What is the ratio of the number of carrots to the total?

• 32 to 21

• 53 to 21

• 21 to 32

• 21 to 53

What is the missing value

• 22

• 24

• 30

• 60

The table compares green to red marbles. If there are 20 green, then how many reds?

• 60

• 20

• 40

• 20

Express 12:30 in simplest form

• 2:5

• 6:10

• 6:5

• 5:2

Cookies cost $4.00 for 10. What is the unit rate per cookie?

• $4.00 for 10 cookies

• $0.40

• $0.04 per cookie

• $40 per cookie

If the unit rate for chocolate chip cookies is $0.25 per cookie, how much for 8 cookies?

• $4.00

• $20.00

• $2.00

• $3.25

A dolphin swam for 4 hours at 30 miles per hour. How far did he go?

• 112 miles

• 12 miles

• 1200 miles

• 120 miles