Arun bought toffees at 6 for a rupee. How many for a rupee he should sell to gain 20%?

A vendor sells his articles at a certain profit percentage. If he sells his article at 13
13 of his actual selling price, then he incurs a loss of 40%. What is his actual profit percentage?

A sells an article to B at a profit of 10% B sells the article back to A at a loss of 10%. In this transaction

A dishonest dealer marks up the price of his goods by 20% and gives a discount of 10% to the customer. He also uses a 900 gram weight instead of a 1 kilogram weight. Find his percentage profit due to these maneuvers?

By selling a bicycle for Rs. 2,850, a shopkeeper gains 14%. If the profit is reduced to 8%, then the selling price will be