Select the correct answerC.P of 12 pens = S.P. of 8 pens.Calculate the gain percentage.Options60%50%70%120%

The problem states that the cost price (C.P.) of 12 pens is equal to the selling price (S.P.) of 8 pens. This implies that the seller is making a profit.

Let's denote the cost price of one pen as 'x'. Therefore, the cost price of 12 pens is 12x.

According to the problem, 12x is also the selling price of 8 pens. So, the selling price of one pen is 12x/8 = 1.5x.

The profit made on one pen is therefore 1.5x - x = 0.5x.

Profit percentage is calculated as (Profit/Cost Price) * 100.

So, the profit percentage here is (0.5x/x) * 100 = 50%.

Therefore, the correct answer is 50%.