Answer:
Net value of the investment (margin) is $6,000
Step-by-step explanation:
The initial margin = (100 shares * $80) * 50%
The initial margin = $4,000
Increase in the Margin value = 100 shares* ($100-$80)
Increase in the Margin value = 100 shares * $20
Increase in the Margin value =$2,000
Net value of the investment (margin) = $4,000 + $2,000
Net value of the investment (margin) = $6,000