A business is looking to invest £5,000 in a new machine. It intends to borrow the £5,000 required from the bank and repay it over five years. The monthly repayment will be £89.50.
Interest (on loans) in %
a) 1.8%
b) 7.4%
c) 8.9%
5.1 Using the information provided, identify the correct interest (on loans) in % the business
will pay (show your workings)

answer; empowerment and collaboration;

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.