A sum was put at simple interest at a certain rate for 9 years Had it been put at 5% higher rate, it would have fetched 1350 more. Find the sum. Answers:  A) 3000  B) 3100  C) 3200  D) 3300  E) 3400

Rationale: "difference in s . i . = p × t / 100 ( r 1 − r 2 ) ⇒ 1350 = p × 9 x 5 / 100 ( ∵ r 1 - r 2 = 2 ) ⇒ p = 1350 × 100 / 9 x 5 = 3000 answer a"
Answer: A