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PercentageShort answer · 2 marks

Nur books a hotel room for $80 before 9% GST is added. How much GST does she pay?

Need a hint?

The GST is 9% of the room charge before GST.

Worked answer

  1. Find 9% of $80: 0.09 × $80.
  2. 0.09 × $80 = $7.20, so the GST paid is $7.20.
Answer: 7.20

The mistake this question tests

Habit

Found the increase, not the new price

Some pupils may give $87.20, which is the total after GST. The question asks for the GST amount alone.

How to fix it at home →

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