Hi, I got this answer wrong. Could I know the explanation for the answer? Thank you.

Figure 29-7: Market for Loanable Funds with Government Borrowing Interest rate (%) 12 Supply of 10 loanable funds 8 6 4 Demand for 2 loanable funds 0 10 20 30 40 50 60 70 80 90 100 Quantity of loanable funds (billions of dollars) Use the "Market for Loanable Funds with Government Borrowing" Figure 29-7. In the accompanying figure, the government budget goes from balanced to a deficit. With a balanced budget, private investment is equal to and with a budget deficit private investment is equal to $40 billion; $40 billion x $60 billion; $80 billion $60 billion; $20 billion =$60 billion; $40 billion $0 billion; $80 billion