Lucy bought 2 pairs of flippers at the store and paid a total amount of $246.24 including 8% GST.
- How much did the 2 pairs of flippers cost before GST?
- The usual price for Lucy's second pair of flippers was $78 before GST. What was the usual price of her first pair of flippers before GST?
|
Member's Birthday Special
|
|
1st pair of flippers at 25% 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% =
$200 |
100% =
$130 |
|
| Discount |
- 25% |
- 40% |
|
| Final price |
75% =
$150 |
60% =
$78 |
$228 |
Final price with
GST 8% |
$162 |
$84.24 |
$246.24 |
(a)
Total cost including GST in percentage
= 100% + 8%
= 108%
108% of the cost = 246.24
1% of the cost = 246.24 ÷ 108 = 2.28
100% of the cost = 100 x 2.28 = 228
Cost of the 2 pairs of flippers before GST = $228
(b)
Discounted price of the first pair before GST
= 228 - 78
= $150
Discounted price of the first pair before GST in percentage
= 100% - 25%
= 75%
75% of the price of 1st pair before GST = 150
1% of the price of 1st pair before GST = 150 ÷ 75 = 2
100% of the price of the 1st pair before GST = 100 x 2 = 200
Usual price for the first pair of flippers before GST = $200
Answer(s): (a) $228; (b) $200
