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Simple Interest - General Aptitude

Q1:

What will be the ratio of simple interest earned by certain amount at the same rate of interest for 6 years and that for 9 years?

A 1 : 3

B 1 : 4

C 2 : 3

D Data inadequate

E None of these

ANS:C - 2 : 3

Let the principal be P and rate of interest be R%.

 Required ratio =
P x R x 6
100
= 6PR = 6 = 2 : 3.
P x R x 9
100
9PR 9