Solving Problems with Unit Rate

Christine knit a total of 10 centimeters of scarf over 2 nights. How many nights will Christine have to spend knitting in order to knit a total of 15 centimeters of scarf? Solve using unit rates.

• 3 nights
• 4 nights
• 5 nights
• 6 nights

Jane ran a total of 8 miles over the course of 4 track practices. How many track practices would it take for Jane to run 20 miles? Solve using unit rates.

• 10 practices
• 2 practices
• 12 practices
• 20 practices

Vicky spent 12 minutes on the phone while routing 4 phone calls. In all, how many phone calls does Vicky have to route to spend a total of 15 minutes on the phone? Solve using unit rates.

• 5 calls
• 3 calls
• 4 calls
• 6 calls

Malia prepared 10 kilograms of dough after working 2 hours. How many hours did Malia work if she prepared 20 kilograms of dough? Solve using unit rates.

• 4 hours
• 2 hours
• 5 hours
• 8 hours

Regan's Auto Wash had revenues of $15 from 3 customers. In all, how many customers does Regan's Auto Wash need to serve in order to have a total of $20 in revenue? Solve using unit rates.

• 4 customers
• 5 customers
• 6 customers
• 8 customers

Gina walked a total of 12 kilometers by making 2 trips to school. How many trips will Gina have to make in all to walk a total of 18 kilometers? Solve using unit rates.

• 3 trips
• 6 trips
• 8 trips
• 4 trips

Nolan jarred 16 liters of jam after 8 days. How much jam did Nolan jar if he spent 10 days making jam? Solve using unit rates.

• 20 liters
• 2 liters
• 5 liters
• 4 liters

Kelly took a total of 8 quizzes over the course of 2 weeks. After attending 4 weeks of school this quarter, how many quizzes will Kelly have taken in total? Solve using unit rates.

• 16 quizzes
• 4 quizzes
• 8 quizzes
• 6 quizzes

Mei bought 4 postcards during 2 days of vacation. How many days will Mei have to spend on vacation before she will have bought a total of 8 postcards? Solve using unit rates.

• 4 days
• 2 days
• 8 days
• 6 days

Kwan used 15 centimeters of tape to wrap 3 presents. How many presents did Kwan wrap if he used 20 centimeters of tape? Solve using unit rates.

• 4 presents
• 5 presents
• 10 presents
• 12 presents