If the cost of price of 16 pens is equal to the selling price of 12 pens, then the gain or loss per cent is

Question

Accepted Answer

Here, a = 16, b = 12
According to the formula,
Required gain percent = [(a - b)/b] x 100
= [(16 - 12)/12] x 100
= (4/12) x 100
= 33¹/₃% (gain)

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