D : 2350
Explanation:
Given,
The grocery price: 350
The amount lady gave: 2000
The amount returned to the lady: 1650
Also, given that the shopkeeper of the next shop comes with the Rs.2000 note saying "duplicate" *and takes his money back.
Therefore, the loss would be the sum of two items:
1) The shopkeeper have to return the 2000 rupees to the next shopkeeper. Therefore, he suffers the loss of 2000.
2) He also sold the grocery worth 350 rupees. Therefore, it would be the extra loss of 350 rupees.
Hence, the shopkeeper faced the loss of 2000 + 350 = 2350 rupees.