Bau Long-Haul, Inc., is considering the purchase of a tractor-trailer that would cost $432,605, would have a useful life of 7 years, and would have no salvage value. The tractor-trailer would be used in the company's hauling business, resulting in additional net cash inflows of $77,500 per year. The internal rate of return on the investment in the tractor-trailer is closest to (Ignore income taxes.):. a. 15%.
b. 54%.
c. 17%.
d. 12%.

if you use only 25 for your entertainment and only 200 for the groceries that you really need and take out the 50 per month for the computer then that should be enough

answer: marginal utility of the fourth brownie is 0.

explanation: marginal utility is the addtional utility gained from the consumption of one more unit of a good. it is given by,

so, marginal utility at the 4th unit will be given by

since, the values are not given here, you can simply find marginal utility at fourth unit by subtracting total utility at 3rd unit from total utility at 4th unit.