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GCSE
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Card 16
Front
when YED > 1
Back
Card 17
Front
When YED < 1
Back
Card 18
Front
Normal necessities
Back
Card 19
Front
Normal luxuries
Back
Card 20
Front
Inferior goods
Back
Card 21
Front
What is PES
Back
Card 22
Front
When PES>1
Back
Card 23
Front
When PES<1
Back
Card 24
Front
PES = 0
Back
Card 25
Front
When PES = infinity
Back
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