Question

Means 1rupee interest is equal to 12%
So 90 paisa interest how much percent

Answer 1

interest I=PRT where P=principal amount of money, R=interest rate per year ,T=number of years
when p=1 rupee
then interest I =12/100
when p=90 paisa=90/100=0.9 rupees
then interest I=0.9*100/12=7.5%

Answer 2

Given: 1 rupee interest is equal to 12%.

To find: The percentage of 90 paisa interest.

Solution:

According to the question, the interest gained on 1 rupee is 12% of its value. So the interest on 1 rupee can be calculated as follows.

$\frac{12}{100} * 1 = Rs. 0.12$

A rupee has 100 paisa and 90 paisa can be written as 0.90 in terms of rupees. The interest amount on the 90 paisa would be the same as 1 rupee but the percentage would change. Hence, the percentage in the case of 90 paisa can be calculated as follows. Let the percentage be x.

$\frac{x}{100} * 0.90 = Rs0.12$

$x = 13.33$

Therefore, the percentage of 90 paisa interest is 13.33% of its value.