Question

If the compound interest for the 3rd and 4th year on a certain principal is rs 125 and 135 respectively, what is the rate of interest (in %)?

Answer 1

Answer:

plz find the attachment, hope it helps.

Answer 2

Compound interest for the 3rd and 4th year on a certain principal is rs 125 and 135 respectively then the rate of interest is 8 %

Solution:

Given that,

Compound interest for the 3rd and 4th year on a certain principal is rs 125 and 135 respectively

Therefore,

Interest earned for 1 year = 135 - 125 = 10

Rate of interest = ?

$Interest = \frac{p \times n \times r}{100}\\\\10 = \frac{125 \times 1 \times r}{100}\\\\125r = 1000\\\\r = 8 \%$

Thus, rate of interest is 8 %

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