This is new at P6 and it is where percentage questions start to bite, because the whole is no longer printed in the question — it is what you are asked to find. The method is the unitary method: the amount you are given is worth some percentage, so divide by that percentage to get 1%, then multiply by 100. The trap is the reverse-discount question. If a jacket cost $120 after a 20% discount, the usual price is not $120 plus 20% of $120, because the 20% was taken off the bigger, original price. Name the whole first, every time.
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