If MPL=.5 and the wage rate is 20 when 5 units of output re being produced, what is the marginal cost?

Please help with the following.

M d. The marginal product of labour is zero beyond 15 hours. Imagine that you work for 40 hours per week at the wage rate of £10 an hour. Your free hours are defined as the number of hours not spent in work per week, which in this case iS 24 hours x 7 days - 40 hours 128 hours per week Suppose now that your wage rate has increased by 100%. If you want to keep your total weekly income constant, then: Select one or more: Your total number of hours will fall by 25%. O a. O b. Your total number of hours will fall by 50%. You will work 25 hours per week. C. O d. Your free time will increase by 25%. 因 口 五 0 ASUS ZenBook

Baghiben

suppose Fred produces 500 litres of milk every day with 10 workers. the price of milk is $12 per litre, and each worker is paid $550 daily. if th margin product of the last worker employed is 40 litres of milk, explain whether Fred is maximizing his profit. If not, can Fred incrase his profit by employing more or fewer workers? If Fred buys more dairy cattles, how will it affect his demand for labor? Explain with a diagram.