Juanita and Gilberto need to decide which one of them will take time off from work to complete the rather urgent task of digging postholes for their new fence. Juanita is pretty good with a post auger; she can dig the holes in 30 minutes. Gilberto is somewhat slow; it takes him 3 hours to dig the holes. Juanita earns $120 per hour as a psychiatrist, while Gilberto earns $25 per hour as a cobbler. Keeping in mind that either Juanita or Gilberto must take time off from work to dig the holes, who has the lower opportunity cost of completing the task?

Aceramics manufacturer sold cups last year for $7.50 each. variable costs of manufacturing were $2.25 per unit. the company needed to sell 20,000 cups to break even. net income was $5,040. this year, the company expects the price per cup to be $9.00; variable manufacturing costs to increase 33.3%; and fixed costs to increase 10%. how many cups (rounded) does the company need to sell this year to break even?

1. gar principles or "the principles"are intended to do what?

Stocks a, b, and c are similar in some respects: each has an expected return of 10% and a standard deviation of 25%. stocks a and b have returns that are independent of one another; i.e., their correlation coefficient, r, equals zero. stocks a and c have returns that are negatively correlated with one another; i.e., r is less than 0. portfolio ab is a portfolio with half of its money invested in stock a and half in stock b. portfolio ac is a portfolio with half of its money invested in stock a and half invested in stock c. which of the following statements is correct? a. portfolio ab has a standard deviation that is greater than 25%.b. portfolio ac has an expected return that is less than 10%.c. portfolio ac has a standard deviation that is less than 25%.d. portfolio ab has a standard deviation that is equal to 25%.e. portfolio ac has an expected return that is greater than 25%.