Multiple choice

The monthly salaries of A and B are in the ratio 8: 9. If they get salary increment of Rs. 4000 each, the ratio of new monthly salaries of A and B becomes 10: 11. What is the new monthly salary of A?

  1. 16000

  2. 18000

  3. 22000

  4. 20000

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Let original salaries be 8x and 9x. After increment: (8x+4000)/(9x+4000) = 10/11. Cross-multiplying: 11(8x+4000) = 10(9x+4000), giving 88x+44000 = 90x+40000, so 2x = 4000, x = 2000. A's new salary = 8(2000)+4000 = 20000. This is a standard ratio problem with increment.