6.38%

1000-940=60 gm profit per 940 gm = 60/940 = 0.0638= 6.38%

A shopkeeper sells his goods at cost price but uses a weight of 850 gm instead of kilogram weight. What is his profit percentage?

A shopkeeper sells his goods at cost price but uses a weight of 860 gm instead of kilogram weight. What is his profit percentage?

A shopkeeper sells his goods at cost price but uses a weight of 888 gm instead of kilogram weight. What is his profit percentage?

A shopkeeper sells his goods at cost price but uses a weight of 880 gm instead of kilogram weight. What is his profit percentage?

A shopkeeper sells his goods at cost price but uses a weight of 780 gm instead of kilogram weight. What is his profit percentage?