by selling 14 pencils for a rupee a man loses 22 % . how many for a rupee should he sell in order to gain 22 % ?
"88 % - - - 14 122 % - - - ? 88 / 122 * 14 = 10 answer : a"
multiply(divide(const_1, multiply(add(const_100, 22), divide(const_1, subtract(const_100, 22)))), 14)