Question

Beck finished 30% of his homework in 12 minutes. How many minutes will it take him to complete all of his homework?

Part A

Let m = the number of minutes it will take Beck to finish his homework.

Choose the equation that can be used to find a solution to the problem.

A) 0.03m = 12

B) 12m = 0.3

C) m = 0.3 × 12

D) 0.3m = 12

Part B

Use the expression from Part A to find the total number of minutes it will take Beck to complete all of his homework.

Enter your answer in the box.


_________minutes

Answer 1

Answer: The answer is 40 minutes.

Equation: If m is the total number of minutes it takes him to complete his homework, 30% of m is given by 0.3m. Since 30% was done in 12 minutes, we have 0.3m=12.