Question

simple interest on a certain sum is 16 upon 25 of the sum find the rate percent and time if both are numerically equal

Answer 1

Heya.....

Here's your answer......

Let the sum/principal be x.

Given that Simple interest on a certain sum is 16/25 of the sum.

SI = 16/25 * x

   = 16x/25.

Now,

Given that Rate and Time are numerically Equal.

Let the rate of interest and Time be R years.

We know that SI = PTR/100

                       16x/25 = x * R * R/100

                       16x/25 = xR^2/100

                       16/25 = R^2/100

                      1600 = 25R^2

                      1600/25 = R^2

                      64 = R^2

                      R = 8.

Therefore the Rate = 8% and Time = 8 years.

Thanks...!!!

XD

Sorry baby 'wink'