A sum was put at simple interest at certain rate for 3 years. Had it been put at 1% higher rate it would have fetched Rs. 75 more. The sum is: A. Rs. 2,400 B. Rs. 2,100 C. Rs. 2,200 D.Rs. 2,480  Choose the correct choice from the following answers:
A) 2500
B) 2100
C) 2200
D) 2300
E) 2400

Rationale: "1 percent for 3 years = 75 1 percent for 1 year = 25 = > 100 percent = 2500 answer : a"
Answer: A