The simple interest on a sum of money will be Rs.800 after 10 years. If the principal is trebled after 5 years what will be the total interest at the end of the tenth year? Choose the correct answer:	A) 2261	B) 1600	C) 1200	D) 2699	E) 2771
P --- 10 ---- 800   P --- 5 ----- 400   3P --- 5 ----- 1200   ------   =&gt; 1600   Answer: 1600
<result>B</result>
The simple interest on a sum of money will be Rs.800 after 10 years. If the principal is trebled after 5 years what will be the total interest at the end of the tenth year?