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

If a seller bought an item for Rs. 900 and determined the mark price in such a way that after giving 10 percent discount, he would get a profit of 20 percent, what would be the mark price?

30 dozen walnuts were purchased for Rs. 14400 and 32 packets of walnuts (20 walnuts in each packet) were purchased for Rs. 57600. If a packet of Akharato was sold for five rupees in a pack at Rs. 432, what would be the profit percentage?

Chandu bought a watch at 20 percent discount on mark price but sold it at mark price. Find the percentage of profit.

Rekha bought a scooter for Rs 20,000 and sold it for Rs 22,000. What is the profit percentage?

A shopkeeper gains 20 percent by giving a discount of 10 percent of the marked price of a toy. If he had given a discount of 20 percent, then what would be his profit percentage?

A and B invested 1/2 and 1/3 of the total capital respectively, the remaining part C invested. If there is a profit of Rs. 9696 at the end of the year, then what is the profit of B?

When a shopkeeper sells an item for Rs 230, he loses 20 percent. If he sells the item for Rs. 339.5, what percentage of profit will he make?