You have $10,000 Initial Margin Requirement is 40%. Maintenance Margin Requirement is 25%. Price per share is $25. Interest rate is10%. Buy maximum number of shares possible

a- What is the Buying Power? b-Maximum number of shares, investor can buy?

c-. Loan Amount? d-Price goes up by 8%, One year later What is the investors RoR=? e- Trigger Price, ignore interest expense f- What is Maintenance Margin Call at Price = $21, Price = $18?

please show how