The S.I. on a certain sum of money for 6 years at 16% per annum is half the C.I. on Rs. 8000 for 2 years at 20% per annum. The sum placed on S.I. is?  Choose the most appropriate option
A) 3000.33 B) 2802.33 C) 1833.33 D) 2990.33 E) 2982.33
C.I. = [8000 * (1 + 20/100)2 - 8000]
= (8000 * 6/5 * 6/5 - 8000) = Rs. 3520.
Sum = (3520 * 100)/(6 * 16)
= Rs.1833.33
Answer:1833.33
<result>C</result>
The S.I. on a certain sum of money for 6 years at 16% per annum is half the C.I. on Rs. 8000 for 2 years at 20% per annum. The sum placed on S.I. is?