31. A dishonest dealer sells a product at 11% loss on cost price, but uses 22% less weight. What is his percentage profit or loss?
32. Apples were purchased at 100 for Rs. 350 and sold at Rs. 48 a dozen. What is the profit or loss percentage?
33. An article is sold at a certain price. If it is sold at $$33\frac{1}{3}\% $$ of this price, there is a loss of $$33\frac{1}{3}\% .$$ What is the percentage profit if the article is sold at 80% of its original selling price?
34. A vegetable seller sells potatoes at Rs. 22 per kg which he purchased at Rs. 18 per kg. But he gives only 850 grams of potatoes instead of 1 kg while selling. What is the actual percentage profit earned by the seller?
35. A dishonest merchant sells goods at a 12.5% loss on the cost price, but uses 28 g weight instead of 36 g. What is his percentage profit or loss?
36. A man bought an article and sold it at a gain of 10%. If he bought the article at 20% less and sold it for Rs. 1,000 more, he would have made a profit of 40%. The cost price of the article (in Rs.) is:
37. How many kg of rice costing Rs. 42 per kg should be mixed with $$7\frac{1}{2}$$ kg rice costing Rs. 50 per kg so that by selling the mixture at Rs. 53.10 per kg, there is a gain of 18%.
38. An article is sold at 25 percent loss. If its cost price is doubled and selling price is increased by Rs. 660, then there is a profit of 20 percent. What is the original cost price of the article?
39. A dealer sells his goods at a profit of 20%, but uses a weight of 800 g in place of a kg weight. Find his real gain percentage.
40. A shopkeeper earns 10% on an investment but loses 20% on another investment. If the ratio of the two investments is 2 : 3, then the combined loss
percentage is:
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