The lossfull Shopkeeper.Number Theory Level pending
A lady buys goods from a shop worth Rs.200. The shopkeeper selling the goods with no profit and no loss. The lady gives him a 1000 rupee note. Shopkeeper did'nt had change so he got change of 1000 rupees from a sideby shopkeeper. Shopkeeper gave Rs.800 back 2 the lady and kept Rs.200 with him for the goods he sold to lady. Later on, the sideby shopkeeper comes back to the the shopkeeper (who sold goods worth Rs.200) saying that that 1000 rupee note he gave him is duplicate. How much loss did the goods selling shopkeeper had ?