Question

At what rate per cent per annum simple Interest will a sum treble itself in 16 years​

Answer 1

Answer:

Hence, we get the rate of interest as 12.5 %. Note: There is a possibility that the students think that the simple interest becomes triple of the principal amount, that is simple interest is 3 x. So, in further calculations for finding the rate of interest, they will end up with, rate=3×10016⇒18.75%.

Step-by-step explanation:

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Answer 2

Answer:

Let Rsx be the sum, then according to question, the amount will be Rs3x. Then simple interest will be,

S.I.=Amount−Principle

=3x−x

=2x

The time is given as 16 years.

S.I.=

100

P×R×T

2x=

100

x×R×16

R=

x×16

2x×100

R=12.5%

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