1.  Alfred buys an old scooter for Rs. 4700 and spends Rs. 800 on its repairs. If he sells the scooter for Rs. 5800, his gain percent is: 


2.  If selling price is doubled, the profit triples. Find the profit percent. 


3.  The cost price of 20 articles is the same as the selling price of x articles. If the profit is 25%, then the value of x is: 


4.  In a certain store, the profit is 320% of the cost. If the cost increases by 25% but the selling price remains constant, approximately what percentage of the selling price is the profit? 


5.  A vendor bought toffees at 6 for a rupee. How many for a rupee must he sell to gain 20%? 

