Assuming a man eats beef jerky every day and buys it for a $1 dollar per strip o

Question

Assuming a man eats beef jerky every day and buys it for a $1 dollar per strip of jerky what would the Marginal Utility from the last strip of Jerky and Marginal Utility per dollar of the last strip be? Please explain how you got the answer because the formula that I am using isnt making any sense

Quantity Total Utility   Marginal Utility From the      Marginal Utility per dollar

of Jerky     From Jerky   Last strip                          of the last strip

1                12

2                22

3                30

4                33

5                29

Explanation / Answer

marginal utility = change in total utility / change in quantity

marginal utility per dollar = marginal utility/ diffrence in amount to buy next jerky

difference in amount always = 1$ , as cost of buying a unit =1$

quantity marginal utility from the last strip marginal utility per dollarfrom the last strip

2 (22-12)/(2-1) = 10/1 = 10 10/1 =10

3 (30-22)/(3-2) = 8/1 = 8 8/1 = 8

4 (33-30)/(4-3) = 3/1 = 3 3/1 = 3

5 (29-33)/(5-4) = -4/1 = -4 -4/1 = -4

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