A man gain 15% by selling a calculator for a certain price. If he sells it at the triple price, then what will be the profit percentage?

Ritesh sold a pen for Rs. 36 with a profit of 20%. If it were sold for Rs. 33, then what could be the percentage of profit or loss?

Mr. Kiran sold a bus for Rs.18,700 at a loss of 15 %. At what price should the bus be sold to get a profit of 15 %?

A man wanted to sell an article with 20% profit: but he actually sold at 20% loss for Rs. 480, At what price he wanted to sell it to earn the profit? 

Aparna changes the marked price of an item to 50% above its C.P. What % of discount allowed in approximately to gain 10%?

By selling 100 pencils, a shopkeeper gains the selling price of 20 pencils, His gain percent is:

The cost price of 20 articles is the same as the selling price of x articles. If there is 25% gain, then the value of x

A wholesaler purchased 7 hair clips for a rupee. How many for a rupee must he sell to get profit of 40%?