Please help me for my homework! Be careful when solving problems. I really need the right answers

1- Suppose that you obtain a mortgage loan of 200.000 $ in order to buy an apartment. You would like to give the apartment for rent. Your plan is to pay the loan installments with your rent income. That's why, the periodic rent amount must exactly match with periodic installment amounts. The loan agreement has a maturity of 10 years and annual rate of 10%, while the rent agreement ends in 5 years and has an annual rate of 8%. Both agreements require monthly payments. What would be the approximate present value of expected rent payments to you? a) 130.350 $ b) 321.560 $ c) 123.390 $ d) 102.075 $ 2- Suppose that you have a bargain with the bank officer to obtain a loan. The loan amount is 500.000 $ and the maturity is 8 years. Annual market interest rate is 8%. Yearly payments will be made. The problem is that you cannot afford the required periodic installments under these conditions. Instead, you offer the bank to pay 30.000 $ as yearly installments and to make a lumpsum amount of payment at maturity. If the bank accepts your offer, what would be that lumpsum amount approximately? a) 589.228 $ b) 532.464 $ c) 606.366 $ d) 658.666 $