If the cost price of 28 items is equal to the selling price of 21 items, what is the profit percentage?

A shopkeeper bought 80 pens in Rs. 400. He sold 40 pens at 60% profit and sold the remaining pens at 20% profit. If he had sold all the pens at a 15% profit, how much less profit would he have made?

If Manoj buys 324 toffees for Rs 486, then how many toffees should he sell for Rs 90 to make 50% profit?

Krishnan bought a camera and paid 20% less than its original price. He sold it at 40% profit on the price he had paid. The percentage of profit earned by Krishnan on the original price was

By what fraction selling price ( S.P. ) must be multiplied to get the cost price ( C.P. ) if the loss is 20%? 

Anil bought two articles A and B at a total cost of ₹ 10,000. He sold the article A at 15% profit and the actacle B at 10% loss. In the whole deal, be made no profit or no loss. Find the selling price of the article A.

A shopkeeper buys three products a, b, c and sells them at 20%, 30%, 40% profit, respectively. What is ratio of the selling price of these products, if the ratio of their cost prices is 4:3 :2?

A shopkeeper marks an article 24% above its cost price and allows a 15% discount on the marked price. If he earns a profit of Rs. 27 by selling the article, then the selling price of the article is: