Dr Pooranmal and Ashfaq A Khan Solutions for Chapter: Profit and Loss, Exercise 1: EXERCISE 12.1

A farmer has bought $100$ hens for $₹4000$ sells $20$ of them at a gain of $5\%$. At what gain per cent must he sell the remaining as to gain $20\%$ on the whole?

A house was sold at a gain of $20\%$. Had it been sold for $₹3000$ more, the gain would have been $25\%$. Find the cost of the house.  

A man buys pens at $6$ for $₹10$ and sells them at $4$ for $₹10$. Find his gain per cent.

By selling an article for $₹72$, a man loses $\frac{1}{7}$ of his outlay. If it is sold for $₹94.5$, what is the gain or loss per cent?

If the manufacturing gains $10\%$, wholesaler $15\%$ and the retailer $20\%$, then what is the cost of production of a gas stove whose retail price is $₹7590$. 

A man sold two cows for $₹1200$ each, getting $20\%$ on the one and losing $20\%$ on the other. Find his total gain or loss per cent.

A shopkeeper buys paper at $₹50$ per ream. At what price per quire should he sell it so as to gain $20$ percent?

Three items are purchased for $₹500$ each. If one of these is sold at a loss of $10\%$, at what price should the other two be sold to gain $20\%$ on the whole transaction?