The simple interest on a sum of money will be Rs.500 after 10 years. If the principal is trebled after 5 years what will be the total interest at the end of the tenth year?
Select the correct option
A) 700	B) 800	C) 900	D) 1000	E) 1100
P --- 10 ---- 500   P --- 5 ----- 250   3P --- 5 -----750   ------   =&gt; 1000   ANSWER:1000
<result>D</result>
The simple interest on a sum of money will be Rs.500 after 10 years. If the principal is trebled after 5 years what will be the total interest at the end of the tenth year?