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IGCSE
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Edexcel
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Economics
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Concept
Current concept
1.1 The market system
1.1.4.b PED formula
Syllabus
2026
Objective
1.1.4
Level
—
1.1.4.b PED formula
Use PED = percentage change in quantity demanded ÷ percentage change in price.
Concept
IGCSE Economics
Lesson
Practice