National Income and Balance of Payments Accounts

The following information corresponds to Home's accounts in 2019. Domestic investment was $500 and the country saw capital gains of $20 on its domestic assets that year. Home ran a current account surplus of $150 and its residents accumulated $125 in foreign assets. In addition, home enjoyed $10 in capital gains on its international portfolio. Assume the capital account is KA = 0.

Question 1 .) What is the "current account identity"?

Question 2 .) What was domestic savings in 2019?

Question 3.) How did home's external wealth change in 2019?

Question 4.) How did home's total wealth change in 2015?

Question 5.) What happened to home's external liabilities in 2019?