Answer:
margin interest = $417.29
Explanation:
given data
purchase share = 800
stock at a price = $55
initial margin requirement = 65 percent = 0.65
maintenance margin = 30 percent = 0.30
effective interest rate = 4.69 percent = 0.0469
time = 7 month = [tex]\frac{7}{12}[/tex] year
solution
we get here margin interest that is express as
margin interest = ( [tex](1+rate)^{time}[/tex] -1 ) × ( purchase share × stock price × ( 1 - initial margin )) ....................1
put here value we will get
margin interest = ( [tex](1+0.0649)^{\frac{7}{12} } -1[/tex] ) × ( 800 × 55 × ( 1 - 0.65 ) )
solve it we get
margin interest = $417.29