If of then of is the same as?

If 40% of a = b, then b% of 40 is the same as?

  1. A.

     4% of a

  2. B.

    12% of a

  3. C.

    16% of a

  4. D.

    None of these

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Show answer & explanation

Correct answer: C

Given:
40% of a = b
⇒ b = 0.4a

We need:
b% of 40
= (b/100) × 40
= (0.4a / 100) × 40
= (0.4a × 40)/100
= (16a)/100
= 0.16a
= 16% of a

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