CAT 1997 — QA Question 25
PercentageEasy
A man earns x% on the first Rs. 2,000 and y% on the rest of his income. If he earns Rs. 700 from income of Rs. 4,000 and Rs. 900 from if his income is Rs. 5,000, find x%.
Answer & solution
Correct answer: 15%
- A
20%
15%
- C
25%
- D
None of these
Solution
The two equations can be written
2000 + 2000 = 700 and 2000 + 3000
The equations can be simplified to x + y = 35 and 2x + 3y = 90. Solving these two equations simultaneously, we get x = 15%.