a dishonest dealer professes to sell goods at the cost price but uses a weight of 650 grams per kg , what is his percent ?
"explanation : 650 - - - 350 100 - - - ? = > 53.8 % answer : d"
subtract(multiply(divide(const_100, 650), multiply(const_100, multiply(add(const_3, const_2), const_2))), const_100)