Q. 22 D

What is the rate of simple interest per annum, when the interest of some money in 10yrs. will be part of its amount (principal along with interest)-Let us determine it.

Answer :

Say rate of simple interest per annum is ‘r’

Given: Interest of some money will be

Let’s Principal be ‘P’

Interest =

P = P, r = r, t = 10 years and I =


r = 4%

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