Charlie once visited chocolate factory to buy some chocolates.Chocolate cost Rs. 3 each and he had only Rs. 45.He was disappointed. He wanted more. But when he reached the factory he was amazed. There was a scheme on that special day. If you return 3 wrappers of the chocolate you will get one chocolate for free. So how many chocolates can he buy?
Charlie has Rs. 45 and each chocolate cost Rs. 3. So he buys only 15. But there is a scheme. He will return 15 wrappers and get 5 chocolates free. Then he will return 3 out of 5 and get one free. And he will again use one wrapper with the remaining 2 to get one more.
So 15+5+1+1 = 22.