Rates and Compare Rates Math

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

• $8 per pound

• $5 per pound

• $35 per pound

• 0.125 pounds per dollar

Alycia earned $20.40 in 3 hours. What is her unit rate in dollars per hour?

• $7 per hour

• $6 per hour

• $6.80 per hour

• $17.40 per hour

What is the rate of change of the average height in feet of the trees with respect to the number of years since the trees were planted?

• 3 ft/yr

• 7 ft/yr

• 10 ft/yr

• 14 ft/yr

A sixth-grade math teacher can grade 25 homework assignments in 20 minutes. Is he working at a faster rate or slower rate than grading 36 homework assignments in 30 minutes?

• Slower rate

• Faster rate

• He didn't grade them

• Everyone got 100

The graph represents how many chips Rebecca eats in an hour. The equation represents the rate Leila eats chips at.

Who will eat more chips in 3 hours?

• Rebecca will eat more chips

• Leila will eat more chips

• They will eat the same amount of chips

The graph below represents the rate at which Melanie listens to songs. The equation represents the rate at which Jesse listens to songs.

Over a day, who listens to more songs?

• Melanie

• Jesse

• They listen to the same amount of songs

Israel and Daniel are both swimming laps in the same swimming pool. Israel can swim 4 laps in 6 minutes. Daniel can swim 6 laps in 12 minutes. Based on these rates, which statement is NOT true?

• Daniel can swim more laps than Israel

• Daniel can swim 3 laps in 6 minutes.

• Israel can swim 2 laps in 3 minutes.

• Israel can swim more laps than Daniel

A hybrid car averages 15 kilometers per liter of gasoline. A non-hybrid car averages 9 kilometers per liter of gasoline. How many more kilometers can the hybrid car travel than the non-hybrid car on 3 liters of gasoline using the average rates?

• 15 kilometers

• 18 kilometers

• 27 kilometers

• 36 kilometers

If a car travels 300 miles on 10 gallons of gasoline, what is the car's fuel efficiency in miles per gallon?

• 20 miles/gallon

• 30 miles/gallon

• 25 miles/gallon

• 15 miles/gallon

The graph below represents how many cakes Cody made. The equation represents the rate at which Dean makes cakes.

Who makes the least number of cakes in five days?

• Cody

• Dean

• They make the same amount of cakes