Rates and Ratio Review

Nicholas bought 5 pens for $3. At this rate, how much will he spend on 8 pens?

• $4.40

• $4.60

• $4.80

• $5.00

Sophia uses 3 cups of peanut butter to make 51 peanut butter cookies. At this rate, how many cups of peanut butter does she need to make 153 peanut butter cookies?

• 6 cups of peanut butter

• 9 cups of peanut butter

• 12 cups of peanut butter

• 8 cups of peanut butter

Express the rate as a unit rate: 70 miles in 2 hours

• 70 miles in 2 hours

• 35 miles in 1 hour

• 45 miles in 1 hour

• 140 miles in 4 hours

Tiffany pays $40 for 160 minutes of talk time on her cell phone. How many minutes of talk time does she get per dollar?

• 4 minutes

• 40 minutes

• 120 minutes

• 6400 minutes

Solve the proportion.

• n=6

• n=24

• n=7

• n=8

The table shows the number of city blocks and houses on four different mail routes. Based on the relationship shown in the table, which statement is true?

• There are 8 times as many houses as city blocks on each mail route.

• There are 12 times as many houses as city blocks on each mail route.

• There are 24 times as many houses as city blocks on each mail route.

• There are 2 times as many houses as city blocks on each mail route.

Solve for the variable:

• 41

• 43

• 47

• 49

It took Conner 45 minutes to jog 5 miles. At this rate, how many minutes did it take him to jog each mile?

• 10 min

• 8 min

• 0.11 min

• 9 min

162 heartbeats in 60 seconds What is the correct way to express as a unit rate?

• 0.37 heartbeats/s

• 81/30 heartbeats/s

• 162/60 heartbeats/s

• 2.7 heartbeats/s

Laurie can type 675 words in 7.5 minutes. Kathi can type 570 words in 6 minutes. Use unit rates to determine if each pair of rates is equivalent. Choose the correct explanation.

• No; since the unit rates 90 words/min and 95 words/min are not the same, the rates are not equivalent.

• No; since the unit rates 92 words/min and 95 words/min are not the same, the rates are not equivalent.

• Yes; since the unit rates are both 90 words/min the rates are equivalent.

• No; since the unit rates 99 words/min and 95 words/min are not the same, the rates are not equivalent.