Use the tables to answer the question.

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

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
.

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
.

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

Answer 1

To determine which writer spent more time writing per problem, we need to calculate the unit rate (minutes per problem) for both Sonia and Maryna.

Sonia:

1. For 6 problems: \[ \frac{120 \text{ minutes}}{6 \text{ problems}} = 20 \text{ min/problem} \]

2. For 18 problems: \[ \frac{360 \text{ minutes}}{18 \text{ problems}} = 20 \text{ min/problem} \]

3. For 25 problems: \[ \frac{500 \text{ minutes}}{25 \text{ problems}} = 20 \text{ min/problem} \]

4. For 60 problems: \[ \frac{1200 \text{ minutes}}{60 \text{ problems}} = 20 \text{ min/problem} \]

All calculations for Sonia have the same result: 20 minutes per problem.

Maryna:

1. For 8 problems: \[ \frac{200 \text{ minutes}}{8 \text{ problems}} = 25 \text{ min/problem} \]

2. For 15 problems: \[ \frac{375 \text{ minutes}}{15 \text{ problems}} = 25 \text{ min/problem} \]

3. For 20 problems: \[ \frac{500 \text{ minutes}}{20 \text{ problems}} = 25 \text{ min/problem} \]

4. For 50 problems: \[ \frac{1250 \text{ minutes}}{50 \text{ problems}} = 25 \text{ min/problem} \]

All calculations for Maryna have the same result: 25 minutes per problem.

Conclusion:

• Sonia spends 20 minutes per problem.
• Maryna spends 25 minutes per problem.

Therefore, Maryna spent more time writing per problem at the unit rate of 25 min./1 problem.

The correct response is:

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