Advanced Mathematics Primary 5 Percentage

A laptop costs $1200 before a 15% discount. If a 9% GST is applied to the discounted price, how much is the final price of the laptop?

A $1020.00
B $1111.80
C $1308.00
D $1092.00
Show Worked Solution

Worked Solution

Step 1: Calculate the discount amount. 15% of $1200 = (15/100) × 1200 = $180. Step 2: Calculate the discounted price. $1200 - $180 = $1020. Step 3: Calculate the GST amount based on the discounted price. 9% of $1020 = (9/100) × 1020 = $91.80. Step 4: Calculate the final price by adding the GST to the discounted price. $1020 + $91.80 = $1111.80. Key formula: Discounted Price = Original Price - Discount; Final Price = Discounted Price + GST Answer: $1111.80

Correct answer: $1111.80

Want more questions like this? Superholic Lab has 10,000+ MOE-aligned questions with full worked solutions.

Start Free Trial — 7 Days Free