Price of petrol keep on increasing every year, let us assume that the price of pertrol in current year is Rs. 100 and every year it increases by Rs. 10. Then after how many every year it will get double.

The price of a scooter was Rs 34,000 last year. It has increased by 20% this year.What is the price now?

The population of a town increases every year by 4%. If its present population is 50,000, then after 2 years it will be

The population of a village is 5000 and it increases at the rate of 2% every year. After 2 years, the population will be :

From 2000 onwards,till 2003 the price of computers increased every year by 10% .After that due to government subsidy the price of computers decreases every year by 10%. The price of a computer in 2006 will be approx. how much per cent less than the price in 2000~ if the same pattern of price is continued:

The price of an article X increases by 20% every year and price of article Y increases by 10% every year. In the year 2010, the price of article X was Rs 5000 and price of article Y was Rs 2000 . In which year the difference in their prices exceed Rs 5000 for the first time ?