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BigorU [14]
1 year ago
5

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

Mathematics
2 answers:
arlik [135]1 year ago
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.

<span><u>0.3m</u> = <u>12</u>
</span>0.3       0.3
m = 40

It will take Beck 40 minutes.

lisabon 2012 [21]1 year 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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