How long will it take for a sum of money to grow from Rs.10000 to Rs.20,000, if it is invested at 25% p.a simple interest?  Choose the correct choice
A) 4 years	B) 64 years	C) 72 years	D) 56 years	E) None
In this case, Rs. 10000 has become Rs.20000.   Therefore, the interest earned = 20000 – 10000 =10000   Interest for Rs 10000 @ 25% for 1 year = 2500   2500 - 1   10000 - ? =&gt; 4 years   4 yearsnswer : 4 years
<result>A</result>
How long will it take for a sum of money to grow from Rs.10000 to Rs.20,000, if it is invested at 25% p.a simple interest?