The total cost of buying the 100 oranges was 100 * 2.50 = 250 naira.
The total selling price of the 100 oranges is 100 * 0.02 = 2 naira.
Therefore, the seller lost 250 - 2 = 248 naira. Answer: \boxed{248}.
100 oranges were bought for 2 naira fifty kobo. They were all sold at 2 kobo each. How much did the seller lose?
1 answer