Consider the widget exchange. Suppose that each widget contract has a market value of $0 and a notional value of $100. There are three traders, A, B, and C. Over one day, the following trades occur:

A long, B short, 5 contracts. A long, C short, 15 contract. B long, C short, 10 contracts. C long, A short, 20 contracts.

a. What is each trader’s net position in the contract at the end of the day? (Calculate long positions minus short positions.)

b. What are trading volume, open interest, and the notional values of trading volume and open interest? (Calculate open interest as the sum of the net long positions, from your previous answer.)

c. : C long, B short, 5 contracts?

d. How would you expect the measures in part (b) to be different if each contract had a notional value of $20?

Yael decides that she no longer enjoys her job, and she quits to open a gluten-free, dairy-free kosher bakery. she pays a monthly rent for her store of $2,000. her labor costs for one month are $4,500, and she spends $6,000 a month on nut flours, sugar, and other supplies. yael was earning $2,500 a month working as a bank teller. these are her only costs. her monthly revenue is $14,000. which of the following statements about yael’s costs and profit are correct? correct answer(s) an accountant would say she is earning a monthly profit of $1,500. her implicit costs are $2,500 a month. an economist would tell her that she is experiencing a loss. her total costs are $12,500 a month. her explicit costs include the labor, rent, and supplies for her store. her economic profit is $1,500 a month.

Susan is a 5th grade teacher and loves getting up every day and going to work to teach her students. this is an example of a. extrinsic value b. interests c. intrinsic value d. external value

Experienced problem solvers always consider both the value and units of their answer to a problem. why?