Question

Question

Use the tables to answer the question.

Sonia
Number of Problems Minutes of Writing
6 120
18 360
25 500
60 1,200

Maryna
Number of Problems Minutes of Writing
8 200
15 375
20 500
50 1,250
Based on the tables showing the number of minutes two writers spent writing math problems for two different lessons, who spent more time writing per problem? Write the answer in unit rate form.

(1 point)
Responses

Maryna spent more time writing per problem at the the unite rate of 25min.1 problem
.
Maryna spent more time writing per problem at the the unite rate of 25min.1 problem
.

Sonia spent the same amount of time as Maryna time writing per problem at the unit rate of 25 min.1 problem
.
Sonia spent the same amount of time as Maryna time writing per problem at the unit rate of 25 min.1 problem
.

Sonia spent more time writing per problem at the unit rate of 20 min. 1 problem
.
Sonia spent more time writing per problem at the unit rate of 20 min. 1 problem
.

Maryna spent less time writing per problem at the unit rate of 1 min.25 problems
.
Maryna spent less time writing per problem at the unit rate of 1 min.25 problems
.
Skip to navigation

Answer 1

To determine who spent more time writing per math problem, we can calculate the unit rate (minutes per problem) for both Sonia and Maryna using the data in the tables.

For Sonia:

• 6 problems: 120 minutes → 120 minutes / 6 problems = 20 minutes/problem
• 18 problems: 360 minutes → 360 minutes / 18 problems = 20 minutes/problem
• 25 problems: 500 minutes → 500 minutes / 25 problems = 20 minutes/problem
• 60 problems: 1,200 minutes → 1,200 minutes / 60 problems = 20 minutes/problem

Unit rate for Sonia: 20 minutes per problem

For Maryna:

• 8 problems: 200 minutes → 200 minutes / 8 problems = 25 minutes/problem
• 15 problems: 375 minutes → 375 minutes / 15 problems = 25 minutes/problem
• 20 problems: 500 minutes → 500 minutes / 20 problems = 25 minutes/problem
• 50 problems: 1,250 minutes → 1,250 minutes / 50 problems = 25 minutes/problem

Unit rate for Maryna: 25 minutes per problem

Comparing the two:

• Sonia: 20 minutes per problem
• Maryna: 25 minutes per problem

Since Maryna's unit rate is higher, she spent more time writing per problem at a rate of 25 minutes per problem.

So, the correct answer is: Maryna spent more time writing per problem at the unit rate of 25 min per problem.