Rs. 800 becomes Rs. 956 in 3 years at a certain rate of simple interest. If the rate of interest is increased by 4%, what amount will Rs. 800 become in 3 years.
Pick one
A) rupees 1052
B) rs 1152
C) rs 1252
D) rs 1352
E) none of these

Rationale: explanation : s . i . = 956 - 800 = rs 156 r = 156 ∗ 100 / 800 ∗ 3 r = 6 1 / 2 % new rate = 6 1 / 2 + 4 = 21 / 2 % new s . i . = 800 × 21 / 2 × 3100 = 252 now amount will be 800 + 252 = 1052 option a
Answer: A