Calculating Unit Rates 7.4B

A worker uses 450 inches of steel wire to make 300 springs of the same size. At this rate how many inches of steel wire are needed to make 1 spring?

• $\frac{1}{3}$ in

• $\frac{1}{15}$ in

• $\frac{2}{3}$ in

• $1\ \frac{1}{2}$ in

Joquain paid $47.00 for 4 movie tickets. Each ticket cost the same amount. Each movie ticket costs $____________.

Tareq pays $22.10 for 2.6 pounds of salmon. What is the price per pound of the salmon?

• $57.46

• $8.50

• $19.50

• $24.70

The table shows the amount of money Melanie earns for working different number of hours. What is Melanie's hourly rate of pay?

• $8.25 per hour

• $8.50 per hour

• $8.75 per hour

• $8.85 per hour

A nugget of gold has a mass of 463.2 grams and a volume of 24.0 mililiters. The density of a substance can be determined by finding the unit rate that compares mass to volume. What is the density of gold?

• 11,116.8 g/mL

• 439.2 g/mL

• 0.052 g/mL

• 19.3 g/mL

Jaylon makes ham sandwiches for a team dinner. He purchases 5 pounds 4 ounces of sliced ham for $26.88. What is the unit cost per ounce for the ham Jaylon purchases?

• $0.49

• $4.97

• $0.32

• $0.42

Sam's Store sells a 100-ounce bottle of cleaner for $12.99, Brook's Store sells the same cleaner for $9.49 for a 70-ounce bottle, and Cam's Store sells a 90-ounce bottle of the same cleaner for $10.98. Which store has the best buy for the cleaner?

• Sam's Store

• Brook's Store

• Cam's Store

• Sam's Store and Brook's Store

Kazeem can walk  $\frac{1}{4}$  mile every  $\frac{1}{5}$  hour.  At this rate, how far can Kazeem walk in one hour?

• 0.8 mile

• 1.25 miles

•  $\frac{1}{20}$  mile

• 2.1 miles