Mr. Moses made an investment of Rs.350. he receives a fixed interest which is compounded annually. His investment doubled after 3 years when compounded annual. How many more years will it take him to get another Rs.700 compound interest?
Choices:
A) 4 years
B) 5 years
C) 1 years
D) 3 years
E) 2 years
Explanatory Answer   Rs.350 invested in compound interest becomes Rs.700 in 3 years.   The amount will double again in another 3 years.   i.e., the amount will become Rs.1400 in another 3 years.   So, to earn another Rs.700 interest, it will take another 3 years.   Answer 3 years
<result>D</result>
Mr. Moses made an investment of Rs.350. he receives a fixed interest which is compounded annually. His investment doubled after 3 years when compounded annual. How many more years will it take him to get another Rs.700 compound interest?