Bob lives in San Diego and loves to eat desserts. He spends his entire weekly allowance on yogurt and pie. A bowl of yogurt is priced at $1.25, and a piece of pecan pie is priced at $3.75. At his current consumption point, Bob's marginal rate of substitution (MRS) of yogurt for pie is 2. This means that Bob is willing to trade two bowls of yogurt per week for one piece of pie per week.

Does Bob's current bundle maximize his utility—in other words, make him as well off as possible? If not, how should he change it to maximize his utility?

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