A principal sum of money amounts to `41/40` of itself in `1/4` years simple interest. Find the rate of interest.

A sum of money becomes 4/3 of itself in 6 years at a cartain rate of simple interest find the rate of interest.

A sum of money becomes 8/5 of itself in 5 years at a cartain rate of simple interest find the rate of interest

A sum of money becomes (41)/(40) of itself in 1/4 year at a certain rate of simple interest. The rate of interest per annum is :

A certain sum of money amounts to Rs 4200 in 3 years and to Rs 6000 in 6 years at simple interest. Find the rate of interest.

A certain sum of money doubles itself & number of years is equal to rate of interest. Find the rate of interest.

A sum becomes 1.6 times of itself in five years at simple rate of interest. Find rate of interest per annum?

A certain sum of money becomes (41)/( 40) times of itself in 4years. Find the Rate of interest.