A furniture store was having Easter discount of 20% off its usual price. The GST is at 3%. Cathy used her credit card to purchase a dining table and Pierre used cash to pay for a similar dining table.
- How much did Cathy pay in the end after GST? Round off your answer to the nearest cent.
- How much did Pierre pay in the end after GST? Round off your answer to the nearest ten cent.
New dining table Usual Price: $200 |
Further Discount: Pay by credit card: 10% off discounted price before GST!
Pay by cash: $55 off discounted price before GST! |
|
Credit Card |
Cash |
Usual Price |
$200 |
$200 |
Less 20% discount |
- $40.00 |
- $40.00 |
Price after 20% discount |
$160.00 |
$160.00 |
Less further discount |
- $16.00 |
- $55 |
Price after further discount |
$144.00 |
$105.00 |
Price after GST of 3% |
$148.32 |
$108.20 |
(a)
New selling price after 20% discount
= 100% - 20%
= 80%
Price of the dining table after Easter discount
= 80% x 200
=
90100 x 200
= $160.00
New selling price after 10% further discount
= 100% - 10%
= 90%
Price of the dining table after credit card discount
= 90% x 160.00
=
90100 x 160.00
= $144.00
Price to pay after including GST
= 100% + 3%
= 103%
Price of the dining table after GST
= 103% x 144.00
=
103100 x 144.00
≈ $148.32 (Round off to nearest cent)
(b)
Price of the dining table after cash discount
= 160.00 - 55
= $105.00
Price of the dining table after GST
= 103% x 105.00
=
103100 x 105.00
≈ $108.20 (Round off to nearest ten cent)
Answer(s): (a) $148.32; (b) $108.20