Multiple choice

The ratio of monthly incomes of A and B is 3 : 4 and the ratio of their monthly expenditure is 2 : 3. If each of them saves Rs. 12000 per month, then monthly income of A is -

  1. 24000

  2. 30000

  3. 36000

  4. 42000
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Let incomes be 3x, 4x and expenditures be 2y, 3y. Savings: 3x-2y = 12000 and 4x-3y = 12000. From first: 2y = 3x-12000. Substituting in second: 4x-3(3x-12000)/2 = 12000. This gives 8x-9x+36000 = 24000, so x = 12000. A's income = 3x = Rs.36000.

Keep practicing — related questions