Multiple choice

The ratio of income of A, B, C was 3 : 7 : 9. Income of A is increased by 40% and income of C is decreased by 20% then the difference of income of A and C become Rs. 1116.What is the income of B ?

  1. Rs. 2232

  2. Rs. 1894

  3. Rs. 4408

  4. Rs. 2604

  5. None of these.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Let the incomes be 3x, 7x, 9x. After changes: A's new income = 3x(1+40/100)=4.2x, C's new income = 9x(1-20/100)=7.2x. The difference is 7.2x-4.2x=3x=1116, so x=372. B's income = 7x = 7×372 = Rs. 2604.

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