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

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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, so b = (40/100) × a = 0.4a.

To find: b% of 40.

Compute: b% of 40 = (b/100) × 40. Substitute b = 0.4a:

(0.4a/100) × 40 = (0.4 × 40 / 100) a = (16/100) a = 16% of a.

  • Answer: 16% of a

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