On selling 18 pens at Rs660 there is a profit equal to the cost price of 4 pens What is the cost pri...........

Quantitative Aptitude (MTS) Profit and loss

On selling 18 pens at Rs660, there is a profit equal to the cost price of 4 pens. What is the cost price of one pen (in Rs)?

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SSC MTS 20th July 2022 Shift-1

- The problem involves selling 18 pens and earning a profit.

- The profit is equal to the cost price of 4 pens, which means the profit from selling 18 pens is equivalent to the price of 4 pens.

- Selling price (SP) for 18 pens is Rs 660.

- Let the cost price (CP) of one pen be 'x' rupees.

- Therefore, the cost price of 18 pens is 18x.

- Profit from selling these pens is 4x.

- Selling price (SP) of 18 pens is also written as CP + Profit: \(18x + 4x = 22x\).

- Given SP = Rs 660, we have: 22x = 660

- Solving for x gives: \(x = 660 / 22 = 30\).

- Correct Answer: Option 3 - 30

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