Correct option is A
Number of IT employees before hiring = 30% of 7200 = (3/10) × 7200 = 2160
Increase in the number of IT employees after hiring = 25% × 324 = (1/4) × 324 = 81
∴ Percentage increase in the number of IT employee = (81/2160) × 100 = 3.75%







