Linda bought one television set at 25% discount off its original price. She paid a total of $648 for it, which was inclusive of 8% GST on the discounted price. What was the original price of the television set?
|
Percent expressed as units |
Percent expressed as % |
Amount |
Original price |
100 u |
|
? |
Discount |
- 25 u |
|
|
Discounted price |
75 u |
100% |
$600 |
GST |
|
+ 8% |
|
Amount to pay |
|
108% |
$648 |
Price of the television set with 8% GST in percent
= 100% + 8%
= 108%
108% of the television set with 8% GST = 648
1% of the television set with 8% GST = 648 ÷ 108 = 6
100% of the television set with 8% GST = 100 x 6 = 600
Price of the television set at 25% discount in units
= 100 u - 25 u
= 75 u
Discounted price = 100% of the price to pay for before adding GST.
75 u of the television set without GST = 600
1 u of the television set without GST = 600 ÷ 75 = 8
100 u of the television set without GST = 100 x 8 = 800
Original price of the television set = $800
Answer(s): $800