SSC CPO SI and ASI 2011 Paper

Question : 117 of 200

Marks: +1, -0

On a certain sum, the simple interest at the end of

6 1 /4

years becomes

3 /8

of the sum. The rate of interest is

Solution:

(2) Let the sum be P and rate of interest be r. So the simple interest will be

3 /8

P . Now,

{3}/{8} P= {P × r × {25}/{4}}/{100}

⇒ r= {3}/{8} × 16=6 \%

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