Question

supplementary materials grade 7 teacher support pack calculating gst and total cost calculate the amount of gst. 1) a blu ray disc that sells for $35.00 2) a charge of $485.05 for some plumbing repairs 3) a used car which costs $12 595.00 calculate the total cost including gst. 4) a combo meal that costs $12.99 gst: total cost: 5) a superhero figurine that costs $26.75? gst: total cost: tsps: grade 7 | mathematics - percents 3: taxes and discounts © 2021 edmonton public schools draft - for teacher use only

Explanation:

1) Calculating GST for the blu - ray disc

Step 1: Recall GST rate (assuming 5% or 10%? Wait, in Canada, GST is 5% generally. Let's assume GST rate \( r = 0.05\) (5%). The formula for GST is \( GST=\text{Price}\times r\)

The price of the blu - ray disc is \( \$35.00\). So \( GST = 35\times0.05\)

Step 2: Calculate the value

\( 35\times0.05=1.75\)

Step 1: Use the GST formula \( GST=\text{Price}\times r\), where \( r = 0.05\) and the price is \( \$485.05\)

So \( GST=485.05\times0.05\)

Step 2: Perform the multiplication

\( 485.05\times0.05 = 24.2525\approx24.25\) (rounded to the nearest cent)

Step 1: Apply the GST formula \( GST=\text{Price}\times r\), with \( r = 0.05\) and price \( \$12595.00\)

\( GST = 12595\times0.05\)

Step 2: Calculate the product

\( 12595\times0.05=629.75\)

Answer:

The GST amount is \(\$1.75\)

2) Calculating GST for plumbing repairs