Consider a monopoly where consumers are currently consuming where the marginal utility is 10 units of utility for the good. The price of the product is $5. The marginal cost of producing the good is $2.00. Then consider perfectly competitive firms where consumers are currently consuming where the marginal utility is 20 units of utility for the perfectly competitive product. The price of the product is $10. At current production levels, the marginal cost of producing the good is $10. Required:
a. Calculate the marginal utility per dollar spent by consumers in a monopolistic industry.
b. Calculate the consumer marginal utility per dollar of marginal cost for the monopoly.

Answer and Explanation:

a. The marginal utility per dollar spent  in a monopolistic industry is

= Marginal utility ÷ Price

= 10 ÷ 5

= 2 utils per dollar

b. The consumer marginal utility per dollar for the monopoly is

= Marginal utility ÷ Marginal cost

= 10 ÷ 2

= 5 utils per dollar

hence by using the above formulas, the above answers should be considered

you will have $2593.74 in 10 years if you set aside $1,000 at 10%

you will have $9321.91 in 20 years if you set aside $2000 at 8%

you will have $1469.32 in 5 years if you set aside $1000 at 8%

you will have $1296.87 in 10 years if you set aside $500 at 10%

you will have $239.66 in 15 years if you set aside $100 at 6%

you will have $4660.96 in 20 years if you set aside $1000 at 8%