Question

The difference between 7/10 of a number and 38% of the number is 112. What is 20% of the number?

A 65 Correct Answer Incorrect Answer
B 90 Correct Answer Incorrect Answer
C 70 Correct Answer Incorrect Answer
D 68 Correct Answer Incorrect Answer

Solution

Let the number be x. Then, x × 7/10 – 38% of x = 112 => 7x/10 – 38x/100 = 112 => 70x – 38x = 112 × 100 => 32x = 11200 x = 350 20% of 350 = 350 × 20/100 = 70

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