The man's cost price for one orange is:
30 ÷ 12 = 2.5 naira
His selling price for one orange is 3 naira.
Therefore, his profit per orange is:
3 - 2.5 = 0.5 naira
His profit percentage can be calculated as:
Profit percentage = (Profit ÷ Cost price) x 100
= (0.5 ÷ 2.5) x 100
= 20%
Therefore, the man's gain percentage is 20%.
A man bought oranges at 12 for 30 naira and sold them at one for 3 naira what was his gain percentage
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