3 This is a simplified question that you must answer the ans
Solution
a) The accounting costs include everything which is explicit and can be calculated in monetary terms .
Accounting cost
Total revenue earned is $20* 160000 = $ 3,200,000
Total accounting cost is $3,160,000
Therefore profit = revenue - cost = $ 3,200,000-3,160,000= $40,000
Economic profit is both impicit and explicit cost included
the opportunity cost of this business would be leaving her current job which is $56,000
Total economic cost = accounting cost + opportunity cost
= $3,160,000+56,000
= $ 3,216,000
b) No Tara should not leave her job beacuse the economic cost is more than the revenue she earns in this business . In other words she would be giving up her job which is paying her $ 56,000 for $40,000 worth of profits which is not a rational deal .
c) Accounting profit of $1
For earning accounting profit of $1 per pen would mean a total profit of $1*160,000 units = $160,000
Also we know the formula of profit as
Profit = revenue - cost
so revenue = profit + cost = $ 160,000+ $ 3,160,000 = $ 3,320,000
Revenue / number of pens = selling price per pen
$3,320,000/ 160,000= $20.75
Economic profit of $ 1 would mean that first the loss due to the opening of business should be covered which is the opportunity cost ie Tara should atleast earn the amount she was earning in her job . The profit was $ 40000 ie $ 16000 less of her job\'s salary. So we will add this to the accounting profit so that her opportunity cost is being covered.
economic profit = revenue-( explicit +implicit costs)
$ 160,000= revenue -(3,160,000+ 56,000)
revenue= $160,000+3,160,000+ 56,000= $ 3376000
cost per pen with economic profit as $ 1 = total revenue / number of pens = $3,376,000/ 160,000 = $ 21.1


