1. Teaching Maths In 1970
A woodcutter sells a lorryload of timber for £100.
His cost of production is 4/5 of the price.
What is his profit?
2. Teaching Maths In 1980
A woodcutter sells a lorryload of timber for £100.
His cost of production is 4/5 of the price, or £80.
What is his profit?
3. Teaching Maths In 1990
A woodcutter sells a lorryload of timber for £100.
His cost of production is £80.
Did he make a profit?
4. Teaching Maths In 2000
A woodcutter sells a lorryload of timber for £100.
His cost of production is £80 and his profit is £20.
Your assignment: Underline the number 20.
5. Teaching Maths In 2008
A woodcutter cuts down a beautiful forest because he is selfish and inconsiderate and cares nothing for the habitat of animals or the
preservation of our woodlands. He does this so he can make a profit of £20.
What do you think of this way of making a living?
Topic for class participation after answering the question: How did the
birds and squirrels feel as the woodcutter cut down their homes?
(There are no wrong answers.)

6. Teaching Maths In 2017
أ المسجل تبيع حموله شاحنة من الخشب من اجل 100 دولار. صاحب تكلفة الانتاج
ن> الثمن. ما هو الربح له
