Question

5) An amount is borrowed at simple interest for
25 years. At the end of this period, this
amount, along with its interest, has trebled
itself. What was the rate per cent?​

Answer 1

Answer:

20% p.a

Step-by-step explanation:

We know that,

S. I = p × r × t / 100

Principal as x

Rate remains r

and time is given 25 years

So,

S. I = x × R × 25 / 100

Therefore,

Rate is 20% p.a

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Answer 2

Answer:

25%

Step-by-step explanation: