By selling 45 lemons for Rs. 40, a man loses 20%. How many lemon should be sell for Rs. 24 to gain 20% in the transaction?

Explanation

Selling price of 45 lemons at loss of 20%. = Rs. 40 Cost price of 45 lemons = $$40 \times \frac{100}{(100 - 20)}$$ $$= 40 \times \frac{100}{80} = Rs. 50$$