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The monthly incomes of A and B are in the ratio 5 : 2. B's monthly income is 12% more than C's monthly income. If C's monthly income is Rs. 15000, then find the annual income of A?

Correct answer: D. Rs. 504000

  • A. Rs. 420000
  • B. Rs. 180000
  • C. Rs. 201600
  • D. Rs. 504000
  • E. None of these

Explanation

C earns Rs. 15000 per month, so B earns 112% of this: 1.12 x Rs. 15000 = Rs. 16800 per month. Since A:B = 5:2, A earns (5/2) x Rs. 16800 = Rs. 42000 per month, and annually earns 12 x Rs. 42000 = Rs. 504000; option a, Rs. 420000, omits the correct monthly-to-annual conversion.

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