SSC CGL Tier II 25 Oct 2015 Paper 1

Question : 81 of 100

Marks: +1, -0

The simple interest on a sum of money is

8/ 25

of the sum. If the number of years is numerically half the rate percent per annum, then the rate percent per annum is

Solution:

(2) Rate = R% per annum
∴ Time =

\R/2

years

∴

Rate

= { { \S.\I. } × 100}/{ { \Principal } × { \Time }}

⇒{R}= {8}/{25}×{100}/{ { {R}}/{2}}

⇒{R}^{2}= {8 × 200}/{25}=64

⇒{R}=√{64}=8 \%

per annum

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