The cost price of 40 oranges is equal to the selling price of 30 oranges. Find the percentage profit.

A cloth merchant on selling 33 metre of cloth obtains a profit equal to the selling price of 11 metre of cloth. The profit percentage is :

If 3 mangoes are sold for the cost price of 4, the profit percentage is -

If after selling 30 pens, the seller observes the profit of sell price of 10 pens, then the profit percentage is –

A man sells 320 mangoes at the cost price of 400 mangoes. His gain percentage is :

Surya sells 45 pens and suffers a loss equal to the selling price of five pens. What is his total loss percentage?