The usual price of a desk fan was $75. A discount of 20% was given during a sale. When Priya bought the desk fan online, an additional $10 discount was given after the 20% discount. How much did Priya pay for the desk fan?
Need a hint?
Find the percentage discount on the usual price before subtracting the additional discount.
Worked answer
- 20% of $75 = $15.
- $75 - $15 = $60 after the percentage discount.
- $60 - $10 = $50.
Answer: $50
The mistake this question tests
Habit
Percentage of a new total
Some pupils subtract the $10 before applying the 20%, or treat the $10 as a further 10% discount. The percentage discount must be calculated from the usual price.
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See the answer →Practise PSLE percentage until the mistakes stop.
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