SSC CHSL 15 Nov 2015 Shift 2 Paper

Question : 139 of 200

Marks: +1, -0

If the ratio of principal and the simple interest of 5 years is 10 : 3, then the rate of interest is:

Solution:

Let principal sum = Rs. 10 and simple interest = Rs. 3
Let rate of interest =

r \ %

and time period = 5 years
Simple interest =

{P×R×T}/100

⇒

{10×r×5}/100=3

r/2=3

⇒

r = 3 × 2 = 6%

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