SAT score decay As we all know SAT scores have been on the decline for years. The following may be the reason why. A math problem in the 60's A logger sells a truckload of lumber for $100. His cost of production is four-fifths of this price. What is his profit? A math problem in the 70's A logger sells a truckload of lumber for $100. His cost of porduction is four-fifths of this price, or $80. What is his profit? A math problem in the 70's using New Math A logger exchanges a set L of lumber for a set M of money. The cardinality of set M is 100, and each element is worth $1. Make 100 dots representing the elements of set M. The set C of the cost of production contains 20 fewer points than set M, and answer the following question: What is the cardinality of the set P of profits? A math problem in the 80's A logger sells a truckload of wood for $100. His cost of production is $80, and his profit is $20. Your assignment: underline the number 20. A math problem in the 90's under Outcome Based Education. By cutting down beautiful forest trees, a logger makes $20. What do you think of this way of living? (Topic for class participation: How did the forest birds and squirrels feel?)