A laptop cost $1500. In a sale, its price was reduced by 12%. Mei bought the laptop at the sale price and a mouse for $35. How much did she pay altogether?
- $215
- $1320
- $1355
- $1535
Need a hint?
Find the sale price of the laptop first, then add the mouse.
Worked answer
- Discount = 12% of $1500 = $180.
- Sale price of the laptop = $1500 − $180 = $1320.
- Total paid = $1320 + $35 = $1355.
Answer: $1355
The mistake this question tests
Habit
Found the increase, not the new price
$180 is the discount, not the laptop's price. The laptop costs $1500 − $180 = $1320 in the sale.
How to fix it at home →Wrong answers children often give:
- $215 Found the increase, not the new price
- $1320 Calculation slip
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