the length of a rectangle is reduced by 15 % . by what % would the width have to be increased to maintain the original area ?
sol . required change = ( 15 * 100 ) / ( 100 - 15 ) = 17.6 % c
multiply(divide(subtract(const_1, divide(subtract(const_100, 15), const_100)), divide(subtract(const_100, 15), const_100)), const_100)