A dishonest shopkeeper professes to sell pulses at the cost price, but he uses a false weight of 960gm. for a kg.His gain is …%.
Choose the correct choice from the following answers.
A) 4.16 %
B) 5.36 %
C) 4.26 %
D) 6.26 %
E) 7.26 %

Rationale: "his percentage gain is 100 * 40 / 960 as he is gaining 40 units for his purchase of 960 units . so 4.16 % . answer : a"
Answer: A