Please solve Part C only in 30 minute i will upvote you

Question 4 a. You have just started a new company to deliver mail and parcels to rural communities. At the moment, other companies either do not provide a service or are exceptionally expensive. The new company requires initial investment to purchase a fleet of 20 medium-size vans. These cost 20,000 each and each one requires a down payment of 20 per cent. Your business plan anticipates the vans being fully paid off after 6 years and you wish to make monthly payments on the vans starting a month from now. The APR of the loan is 9.6 per cent. What are the monthly payments? b. After 4 years, you are approached by another firm who wishes to buy the postal company. You wish to pay off the van loan completely and approach your bank for details. They have indicated that any early completion of your loan will incur a 1 per cent penalty. You have just paid an instalment and have 24 payments left (next payment in a month). How much will you need to pay the bank today to cancel the loan? C. Explain how you would modify the present value of an annuity shortcut formula to accommodate an equal payment stream that begins immediately. How would you modify the present value of an annuity shortcut formula to accommodate an annuity that begins in year 5? How would you answer this question if the payment stream was a growing perpetuity