Question

The profit obtained on the sale of 15 books was Rs 1200 and the selling price of each book is Rs 640. If the marked price of the book is 25% more than its cost price, find the marked price of each book. ​

Answer 1

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Selling price of each book = Rs.640

Selling price of 15 books

= Rs.(640 * 15) = Rs.9600

Profit = Rs.1200

Hence, Cost price

= Rs.(9600 - 1200) = Rs.8400

Marked price = 125% of cost price = 125/100 * 8400 = Rs.10500

Therefore, marked price of each book = Rs.(10500/15) = Rs.700

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Answer 2

Given:

The profit earned by selling 15 books is Rs. 1200. The selling price of each book is Rs. 640. The marked price is 25% more than the cost price.

To Find:

The marked price of each book.

Solution:

1. The selling price of each book is Rs. 640, hence the selling price of 15 books is,

=> Selling price of 15 books = 640 x 15 = Rs. 9600.

2. Total profit earned by selling the 15 books = Rs. 1200.

=> Cost price = Selling price - profit,

=> Cost price = 9600 - 1200,

=> Cost price = Rs. 8400.

3. The marked price is 25% more than the cost price,

=> Marked price = Cost price + 25% of cost price,

=> Marked price = 8400 + 8400/4,

=> Marked price = Rs. 10500.

4. Marked price of each book = 10500/15,

=> The marked price of each book is Rs. 700.

Therefore, the cost of each book is Rs.700.