Question

Isa finished 30% of his homework in 27 minutes. How many more minutes will it take lsa to complete his homework, assuming that he works at the

same pace?
A А.
63 minutes
B
67 minutes
C
70 minutes
O
D
90 minutes

Answer 1

The answer is A. 63 minutes.

Explanation:

I added 27 minutes with each of the answer then multiplied the two added numbers by 30%

27 + 63 = 90 x 30% = 27 minutes (correct answer)

27 + 67 = 94 x 30% = 28.2 minutes (wrong answer)

27 + 70 = 97 x 30% = 29.1 minutes (wrong answer)

27 + 90 = 117 x 30% = 35.1 minutes (wrong answer)

Answer 2

30 * ? = 100 * 27

? = 100 * 27 / 30 = 2700/30 = 270/3 = 90

90 minutes is 1 hour and 30 minutes or an hour and a half

The answer is option D\ 90

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