SSC CGL 2020 PYQ — Question 51

SSC CGL - 3rd March 2020 Shift 3 • Quantitative Aptitude • Q51

The simple interest on a certain sum at the end of three years at 5% p.a. is Rs.1,200. The compound intereset on the same sum for the same period at the same rate is (interest compounded yearly):

Show answer & explanation

Correct answer: D

Explanation

The correct answer is option 4 i.e Rs.1,261.

Understanding/Application

Rate = 5% p.a.

Time = 3 years

S.I. = Rs. 1200

S.I. = (P × R × T)/100 

A = P[1 + (R/100)]T

C.I. = A - P

P = (1200 × 100)/(5 × 3) = Rs. 8,000

Amount = Rs. 8000 × [1 + (5/100)]3 = Rs. 9261
C.I. = Rs. (9261 - 8000) = Rs. 1261