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production is four-fifths the price. What is his profit?

1960: A logger sells a truckload of lumber for $100. His cost of

production is four-fifths the price, or $80. What is his profit?

1970: (new math) A logger examines a set L of lumber for a set M of money.

The cardinality of the set M is 100, and each element is worth $1.00. Make

100 dots representing the elements of the set M. Represent the set C as a

subset of M, and answer the following question: What is the cardinality of

the set P of profits?

1980: A logger sells a truckload of lumber for $100. His cost of

production is $80 and his profit is $20. Your assignment: Underline the

number 20.

1990: (outcome-based education) A logger cuts down a beautiful forest and

makes $20 profit. What do you think of his way of making a living? How did

the forest birds and squirrels feel?

2001: A lumber company lays off 45% of its loggers and improves its stock

price from $80 a share to $100 a share. How much capital gain per share

does the CEO make by exercising his stock option at $50?