Sparky the electrician specializes in rewiring historic houses. sparky recently purchased a new wire minus−pulling device that will decrease the time to complete each job and increase total revenues. the device will cost $2,608 and will increase net cash flows by $1,630 per year. the new device has a useful life of 7 years and a residual value of $230. what is the payback period for the new wire minus−pulling device?
a. 1.74 years
b. 1.46 years
c. 1.60 years
d. 1.40 years

Which of the following is a problem for the production of public goods?

Last week paul, ceo of quality furniture in south carolina, traveled to europe to visit customers. while overseas, paul checked his e-mail daily and showed his company's website to customers, explaining how the website will them place orders and receive merchandise more quickly. after visiting the last customer friday morning, paul was able to return to the corporate office in south carolina to meet with his board of directors that night. is the "shrinking" of time and space with air travel and electronic media.

Bakery has bought 250 pounds of muffin dough. they want to make waffles or muffins in half-dozen packs out of it. half a dozen of muffins requires 1 lb of dough and a pack of waffles uses 3/4 lb of dough. it take bakers 6 minutes to make a half-dozen of waffles and 3 minutes to make a half-dozen of muffins. their profit will be $1.50 on each pack of waffles and $2.00 on each pack of muffins. how many of each should they make to maximize profit, if they have just 20 hours to do everything?