Question

Vinton takes 49 minutes to complete one assignment. He will take about ____ minutes to complete 8 assignments.

• A. 200
• B. 300
• C. 400
• D. 500

Answer 1

The correct option is C 400

Number of minutes taken by Vinton to complete 1 assignment = 49
Number of assignments to be completed = 8

To estimate the number of minutes he will take to complete 8 assignments, we can multiply 50 by 8, which is 400.

This is because 49 is close to 50 and thus, the product $49\times 8$ willl be close to the product $50\times 8.$

Verification:



$49\times 8=392$ is indeed close to 400.