In how much time will the simple interest on 800 at 12.5% per annum be Rs. 125

In how much time would the simple interest on a certain sum be 0.125 times the prinicipal at 10% per annum?

In how much time would the simple interest on a principal amount be 0.125 times the principal amount at 10% per annum?

Find the time when : simple interest on Rs 2500 at 4 % per annum is Rs 200

In how much time will the simple interest on certain sum of money at 7(1)/(2)% per annum be (6)/(5) of itself ?

In how much time will the simple interest on certain sum of money at 12(1)/(2)% per annum be (7)/(4) of itself ?

The simple interest on Rs 100 for 4 years at 5 % per annum is

Simple interest on Rs500 for 4 years at 6.25% per annum is equal to the simple interest on Rs 400 at 5% per annum for a certain period of time.The period of time is (a) 4 years (b) 5 years (c) 6(1)/(4) years (d) 8(2)/(3) years

In how much time will a sum of Rs 1600 amount to Rs1852.20 at 5% per annum at compound interest?