# A sum of Rs. X was put at simple interest at a certain rate for 2 years

A sum of Rs. X was put at simple interest at a certain rate for 2 years. Had it been put at 3% higher rate, it would have fetched Rs. 300 more. The value of 4x is

(a) Rs. 16,000

(b) Rs. 20,000

(c) Rs. 36,000

(d) Rs. 24,000