a sum of 12,500 amounts to 15,500 in 4 years at the rate of simple interest . what is the rate of interest ?
c 6 % s . i . = ( 15500 - 12500 ) = 3000 . rate = ( 100 x 3000 ) / ( 12500 x 4 ) % = 6 %
multiply(divide(divide(const_3, 4), add(multiply(const_3, const_4), add(const_0_25, const_0_25))), const_100)