What this practice covers
These questions are drawn from past AP Economics papers and filtered to supply and demand. You answer, you find out immediately whether you were right, and you get the reasoning for the correct option and for each distractor. Wrong answers go to a mistakes locker so you can come back to exactly those.
Practice is free. You need an account only so your progress and your mistakes are still there next time.
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What examiners see students get wrong here
These are the errors that cost marks on supply and demand, taken from our own topic notes. Read them before you practise and you will recognise the traps in the questions.
- Shifting demand when only the good's own price changed.
- Shifting supply for a change in the price of a substitute, related goods act on demand.
- Drawing a price ceiling above equilibrium and then claiming a shortage.
- Reporting PED with a negative sign and misclassifying by sign instead of absolute value.
- Misreading the sign of YED or XED, which is where the whole answer usually lies.
- Forgetting to shade and label deadweight loss when a tax is imposed.
- Assuming whoever writes the cheque bears the tax.
- Claiming a determinate outcome when both curves shift.
Revise it first
If any of the above is unfamiliar, work through the notes before practising: Supply and Demand revision notes.