Elevator Music?

Teacher's Teasing

The same Maths questions gets more and more difficult each time.

1960s maths test: " A logger cuts and sells a truckload of lumber for $100.His cost of production is four fifths of that amount.What is his profit?"

'70s new-math test:" A logger exchanges a set (l) of lumber for a set (M) of money.The cardinality of Set M is 100. The Set C of production costs 20 fewer points.What cardinality of Set P is profits?"

'80s dumbed down test: " A logger cuts and sells a truckload of lumber for $100.His cost is $80:his profit is $20.Find and circle the number 20"

'90s New Age Test: " An unenlightened logger cuts down a beautiful stand of 100 trees in order to make a $20 profit.Write an essay explaining how you feel about this as a way to make money."

poor logger

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