Find the simple interest on $6000 at 15% per annum for 9 months?  Select the correct option.
A) $492
B) $512
C) $675
D) $745
E) $1020
P = $6000   R = 15%   T = 9/12 YEARS = 3/4 YEARS   S.I. = P*R*T/100 = 6000*15*3/400= 
<gadget id="calculator">6000*15*3/400</gadget>
<output>675</output>
$675   Answer is $675
<result>C</result>
Find the simple interest on $6000 at 15% per annum for 9 months?