Question P6 Percentage change
Today’s problem — free all day, every step. Every day has one.
The price of a jacket falls from $240 to $192. Find the percentage decrease.
Answer
20% decrease
Compare how much an amount changed with its original value.
In this one. The original price is the reference whole. Dividing by the reduced price would answer a different question.
A quantity falls or rises from one stated figure to another, and the question asks for the percentage change. Words like 'decrease' and 'original price' give it away.
Children divide the drop by the new, lower price instead of the original price, which inflates the percentage they report.
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