Calculating Tips and Sales Tax

The video tutorial covers various mathematical concepts, starting with an introduction to bell work on page 75. It explains how to relate the number of cars to passengers using equations, emphasizing the constant of proportionality. The tutorial then shifts to understanding sales tax, using examples to calculate percentages. It compares sales tax rates in different cities and discusses rounding and estimation. Finally, it covers calculating tips and total amounts from subtotals, providing a comprehensive understanding of these mathematical concepts.

If a car can hold 4 passengers, how many passengers can 10 cars hold?

• 36

• 44

• 40

• 48

What is the equation to find the number of passengers (p) if you know the number of cars (n)?

• p = 4n

• n = p + 4

• n = 4p

• p = n + 4

If a pair of sunglasses costs $10 and the total with tax is $10.45, what is the sales tax percentage?

• 5%

• 4.5%

• 3.5%

• 4%

How much sales tax is added to an $8 item if the tax rate is 6%?

• $0.46

• $0.50

• $0.52

• $0.48

What is the sales tax rate if you pay $0.58 on an $8 item?

• 7.5%

• 6.75%

• 7%

• 7.25%

If the sales tax on a $25 lamp is $1.83, what is the approximate sales tax rate?

• 6.5%

• 7.32%

• 7.5%

• 7%

In a restaurant, if the subtotal is $42 and the sales tax is $3.90, what percentage of the subtotal is the sales tax?

• 10%

• 9.3%

• 9%

• 8.5%

If the total bill is $45.99 after tax on a $42 subtotal, what percentage of the subtotal is the total?

• 108.5%

• 109.5%

• 109%

• 110%

If a $7 tip is given on a $42 subtotal, what percentage of the subtotal is the tip?

• 16.67%

• 15%

• 17%

• 16%

What is the total cost if a $42 meal has a 9.3% sales tax and a $7 tip?

• $51.99

• $52.99

• $50.99

• $53.99