A certain sum is invested at simple interest at 18% p.a. for two years instead of investing at 12% p.a. for the same time period. Therefore the interest received is more by Rs. 600. Find the sum?
Choose one
A) 7000	B) 7029	C) 2778	D) 2800	E) 5000
Let the sum be Rs. x.   (x * 18 * 2)/100 - (x * 12 * 2)/100 = 600 =&gt; 36x/100 - 24x/100 =600   =&gt; 12x/100 = 600 =&gt; x = 5000.Answer:5000
<result>E</result>
A certain sum is invested at simple interest at 18% p.a. for two years instead of investing at 12% p.a. for the same time period. Therefore the interest received is more by Rs. 600. Find the sum?