Problem: if the simple interest on a certain amount in at 4 % rate 5 years amounted to rs . 2160 less than the principal . what was the principal ?
Rationale: p - 2160 = ( p * 5 * 4 ) / 100 p = 2700 answer : c
annotated_formula: divide(2160, subtract(const_1, divide(multiply(4, 5), const_100)))