A furniture store was having Easter discount of 15% off its usual price. The GST is at 6%. Tina used her credit card to purchase a breakfast hutch and Fabian used cash to pay for a similar breakfast hutch.

1. How much did Tina pay in the end after GST? Round off your answer to the nearest cent.
2. How much did Fabian pay in the end after GST? Round off your answer to the nearest ten cent.

New breakfast hutch Usual Price: $1000

Further Discount: Pay by credit card: 5% off discounted price before GST! Pay by cash: $15 off discounted price before GST!

	Credit Card	Cash
Usual Price	$1000	$1000
Less 15% discount	- $150.00	- $150.00
Price after 15% discount	$850.00	$850.00
Less further discount	- $42.50	- $15
Price after further discount	$807.50	$835.00
Price after GST of 6%	$855.95	$885.10

(a)
New selling price after 15% discount
= 100% - 15%
= 85%

Price of the breakfast hutch after Easter discount
= 85% x 1000
= ⁹⁵₁₀₀ x 1000
= $850.00

New selling price after 5% further discount
= 100% - 5%
= 95%

Price of the breakfast hutch after credit card discount
= 95% x 850.00
= ⁹⁵₁₀₀ x 850.00
= $807.50

Price to pay after including GST
= 100% + 6%
= 106%

Price of the breakfast hutch after GST
= 106% x 807.50 
= ¹⁰⁶₁₀₀ x 807.50 
≈ $855.95 (Round off to nearest cent)

(b)
Price of the breakfast hutch after cash discount
= 850.00 - 15
= $835.00

Price of the breakfast hutch after GST
= 106% x 835.00 
= ¹⁰⁶₁₀₀ x 835.00 
≈ $885.10 (Round off to nearest ten cent)

Answer(s): (a) $855.95; (b) $885.10