Calculating Sales Tax and Costs

The video tutorial explains how to calculate the total cost of an item including sales tax. It introduces the concept of sales tax, breaks down the expression C + 0.05C, and applies it to a $45 item to find the total cost. The tutorial concludes with a final calculation, demonstrating the process step-by-step.

What is the sales tax rate mentioned in the video?

• 5.0%

• 4.0%

• 6.0%

• 3.0%

What does the expression C + 0.05C represent?

• The pre-tax price of an item

• The total cost of an item including a 5% sales tax

• The shipping cost of an item

• The discount on an item

If the pre-tax price of an item is $45, what is the value of 0.05C?

• $6.75

• $5.00

• $4.50

• $2.25

How do you convert 5% into a decimal for calculation purposes?

• 0.005

• 0.05

• 5.0

• 0.5

What is the total cost of an item with a pre-tax price of $45 after including the sales tax?

• $48.25

• $47.25

• $46.25

• $45.00

What is the purpose of adding 0.05C to C in the expression?

• To determine the profit margin

• To include the sales tax in the total cost

• To find the shipping cost

• To calculate the discount

What is the first step in calculating the total cost of an item with sales tax?

• Divide the pre-tax price by the tax rate

• Add the pre-tax price to the tax amount

• Multiply the pre-tax price by the tax rate

• Subtract the tax from the pre-tax price

Why is it important to understand how to calculate sales tax?

• To avoid paying taxes

• To determine the original price of an item

• To know the exact total cost of an item

• To calculate discounts