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

2 answers:

7 0

The correct answer is choice D. If you put choice D into words, it is saying 30% (0.3) of the total is 12 minutes.

To solve this, use inverse operations.

0.3m = 12
0.3 0.3
m = 40

It will take Beck 40 minutes.

lisabon 2012 [21]3 years ago

4 0

Part A) The answer is D) 0.3m = 12.
Part B) The answer is 40 minutes.

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.

To solve this, we divide both sides by 0.3:
0.3m/0.3 = 12/0.3
m = 40

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