Correct Answer - Option 3 : 9.5%
GIVEN:
Salary after 4 months = Rs. 3800
Salary after 7 months = Rs. 4580
EXPLANATION:
Increment in 3 months = 4580 - 3800 = Rs 780
Monthly increment = 780/3 = Rs 260
4 months increment = 260 × 4 = Rs 1040
Starting salary = Rs 2760
∴ required percentage = 260/2760 × 100 = 9.42% ≈ 9.5%
∴ REQUIRED PERCENTAGE IS 9.5%.