Question

2. A man invested a certain sum in scheme A at 15% p.a. for 2 years and earned Rs 1950 as
simple interest. He increased his sum by Rs. 'X' and invested in another scheme B at 10% p.a. CI.
for 2 years and received Rs. 1680 as compound interest. Find the value of 'x' ?
A. Rs. 1750
B.
Rs. 1500
C. Rs. 1250
D. None of these
E. Rs. 1850​

Answer 1

Answer:

B: Rs. 1500

Explanation:

SI = PTR / 100

⇒1950 = (P * 2 * 15 ) / 100

⇒P = (1950 * 100 ) / (2 * 15)

⇒P = Rs 6500

Compound Interest in 2 years at 10% per annum

⇒10+ 10+ [(10*10)/100] = 21%

⇒(6500+X) * (21/100) = 1680

⇒X = 1500