Question

In 2011 the cost of a book was rs 30.50. the cost of the book gets doubled every year find the cost of book in the year 2015​

Answer 1

1. In 2011, the rate = 30.50
2. In 2012, the rate =2 (30.50) = 61.0
3. In 2013, the rate =122
4. In 2014 , the rate= 244
5. In 2015 , the rate =488

Answer 2

Answer:

1. in 2011, the rate=30.50
2. in2012, the rate=61.0
3. in2013, the rate=122
4. in2014, the rate=244
5. in2015, the rate=488