Rate Complex and Unit Rates

Who swims faster and what is his unit rate?

• Nash - 2 1/2 miles per hour

• Nash - 8 1/10 miles per hour

• Ricardo - 3 3/20 miles per hour

• Ricardo - 8 3/4 miles per hour

Swara's weekly earnings were proportional to the number of hours she worked. This table shows the number of hours Swara worked and the amount she earned.

How much money did Swara earn per hour?

• $22.50

• $9.50

• $19.00

• $7.50

Kolton can mow 3/8 of an acre of grass in 3/4 an hour. How many acres of grass does Kolton mow per hour?

• 2 acres/hour

• 1/2 acres/hour

• 9/24 acres/hour

• 2 2/3 acres/hour

Jashon's pet snail can move 3/10 of a meter every 1/12 hour, what is the speed of the snail, in meters per hour?

• 1/40 m/h

• 5/18 m/h

• 1 1/2 m/h

• 3 3/5 m/h

Saniyah drank 1/4 of a milkshake in 1/10 of an hour. How long will it take her to drink a whole milk shake?

• 5/2 hours per milkshake

• 2/5 hours per milkshake

• 3/4 hours per milkshake

• 4/3 hours per milkshake

The artist completed 3/5 of a painting in 2/3 of an hour. At this rate, how many paintings can she complete per hour?

You spend $40 on 5 pounds of concrete. What is the unit rate in dollars per pound?

• $8 per pound

• $35 per pound

• $5 per pound

• $0.125 per pound