a shopkeeper forced to sell at cost price , uses a 700 grams weight for a kilogram . what is his gain percent ?
"shopkeeper sells 700 g instead of 1000 g . so , his gain = 1000 - 700 = 300 g . thus , % gain = ( 300 * 100 ) / 700 = 42.85 % . answer : option d"
multiply(divide(add(multiply(const_2, const_100), divide(const_100, const_2)), 700), const_100)