Tiger is our National Animal. Their number decreases every year. Figures show 3% annual decrease. According to the census of National Tiger conservation Authority, there were 1700 tigers in India in 2011. If the trend continues, how many tigers would be there in 2016?

John deposited 2500 rupees on the first of January in a bank where interest is compounded half-yearly at 6% annual rate. On the first of July, he deposits 2500 rupees more. How much would he have in his account at the end of the year?

Ramlat deposits 30000 rupees in a financial establishment which pay interest at 9% annual rate, compounded every four months. How much would she get back after one year?

A report estimates e-waste increasing by 15% every year and the e-waste in 2014 is about 9 crore tons. What is the expected amount of e-waste in 2020?

A TV manufacturer decreases the price of a particular model by 5% each year. The current price of this model is 8000 rupees. What would be the price after 2 years?