RRB Group D Model Paper 5 with solutions

Question : 62 of 100

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

3/8P

Now,

3/8P

{P×r×25/4}/100

⇒ r =

3/8

× 16 = 6%

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