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# When Vijay sells 12 pens, he gains the selling price of 2 pens. Calculate his gain percentage.

**Solution: **

The Percentage is defined as a fraction or a ratio in which the value of the whole is always 100.

Let the selling price of one pen be Re.1

Selling price of 12 pens = 1 × 12 = Rs.12

According to the question,

He gains selling price of 2 pens = 1 × 2 = Rs.2

Thus, his profit amount = Rs.2

Profit or Gain = Selling price - Cost price

Selling price = SP = Rs.12, Cost price = CP = Rs.10, Profit = Rs.2

=> 2 = 12 - CP

=> CP = 12 - 2 = 10

=> Cost price = Rs.10

WKT,

% Profit = [(SP - CP) /CP] × 100

= [(12-10) /10] × 100

= (2/10) × 100

= 20%

Therefore, the gain percentage received by Vijay when he sells 12 pens is 20%

## When Vijay sells 12 pens, he gains the selling price of 2 pens. Calculate his gain percentage.

**Summary:**

The gain percentage received by Vijay when he sells 12 pens is 20%

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