What are the interest payments on a $200 loan if the contractual rate is 12%, the loan will be paid back in four uniform interest and principal payments at the end of the next four years, and the remaining balance method of calculating interest will be used (fully amortized)? what is the actuarial, annual percentage, and the effective interest rate? (air, apr, ie =12%)?

Xinhong company is considering replacing one of its manufacturing machines. the machine has a book value of $39,000 and a remaining useful life of 5 years, at which time its salvage value will be zero. it has a current market value of $49,000. variable manufacturing costs are $33,300 per year for this machine. information on two alternative replacement machines follows. alternative a alternative b cost $ 115,000 $ 117,000 variable manufacturing costs per year 22,900 10,100 1. calculate the total change in net income if alternative a and b is adopted. 2. should xinhong keep or replace its manufacturing machine