Zoe bought 2 pairs of flippers at the store and paid a total amount of $291.04 including 7% GST.
- How much did the 2 pairs of flippers cost before GST?
- The usual price for Zoe's second pair of flippers was $72 before GST. What was the usual price of her first pair of flippers before GST?
|
Member's Birthday Special
|
|
1st pair of flippers at 20% discount*
2nd pair of flippers at 40% discount*
*before GST
#2nd pair must be cheaper or equal in price.
|
| |
1st pair |
2nd pair |
Total |
| Selling price |
100% =
$250 |
100% =
$120 |
|
| Discount |
- 20% |
- 40% |
|
| Final price |
80% =
$200 |
60% =
$72 |
$272 |
Final price with
GST 7% |
$214 |
$77.04 |
$291.04 |
(a)
Total cost including GST in percentage
= 100% + 7%
= 107%
107% of the cost = 291.04
1% of the cost = 291.04 ÷ 107 = 2.72
100% of the cost = 100 x 2.72 = 272
Cost of the 2 pairs of flippers before GST = $272
(b)
Discounted price of the first pair before GST
= 272 - 72
= $200
Discounted price of the first pair before GST in percentage
= 100% - 20%
= 80%
80% of the price of 1st pair before GST = 200
1% of the price of 1st pair before GST = 200 ÷ 80 = 2.5
100% of the price of the 1st pair before GST = 100 x 2.5 = 250
Usual price for the first pair of flippers before GST = $250
Answer(s): (a) $272; (b) $250
