a dishonest shopkeeper professes to sell pulses at the cost price , but he uses a false weight of 930 gm . for a kg . his gain is … % .
"his percentage gain is 100 * 7 / 930 as he is gaining 70 units for his purchase of 930 units . so 7.53 % . answer : e"
multiply(subtract(inverse(divide(930, multiply(multiply(add(const_4, const_1), const_2), const_100))), const_1), const_100)