Question

Calculate the simple interest on rs6400 for 6 months at the rate of 10% per annum

Answer 1

Formula :

  If P be any sum and r% be it's rate of Interest per annum for t years, then interest in t years be

         Interest ( I ) = ( Ptr ) / 100

Solution :

Given, Sum = Rs 6400

           Time = 6 months = 1/2 year

           Rate = 10% p.a.

So, interest in 6 months

  = (Sum * Time * Rate) / 100

  = Rs { 6400 * ( 1 / 2 ) *10 } / 100

  = Rs 320

Therfore, the simple interest on Rs 6400 for 6 months at the rate of 10% per annum is Rs 320.

Answer 2

6400*1/2*10/100 =320