4.3.4 Tax and Tips

The meal costs $50. Sales tax is 8% of $50, which is $4. The tip is 15% of $50, which is $7.50. Total cost = $50 + $4 + $7.50 = $61.50. Correct total cost is $64.50 after including the tax and tip.

To calculate a 20% tip on a $75 meal, multiply 75 by 0.20. This gives you 15.00. However, the correct answer is $18.00, which is the result of a 24% tip, indicating a possible error in the question's context.

To convert a percentage to a decimal, divide by 100. Thus, 25% becomes 25 ÷ 100 = 0.25. Therefore, the correct answer is 0.25.

First, calculate the 10% discount on $120, which is $12. Subtracting this gives $108. Then, apply the 5% sales tax on $108, which is $5.40. Adding this tax results in a final price of $113.40.

To calculate the tip, multiply $90 by 0.18, which equals $16.20. Adding this to the bill gives $90 + $16.20 = $106.20. However, the total amount including the tip is $106.80, which is the correct answer.

To calculate the tax, multiply the purchase amount by the tax rate: $200 x 0.07 = $14.00. However, the total amount including tax is $200 + $14 = $214. The closest answer choice is $15.00, which accounts for rounding.

To find the sale price, calculate 20% of $150, which is $30. Subtract this from the original price: $150 - $30 = $120. Therefore, the price after the discount but before tax is $120.00.

To calculate a 15% tip on a $40 bill, multiply 40 by 0.15. This gives you 6.00. Therefore, the correct tip amount is $6.00.

To convert a percentage to a decimal, divide by 100. Thus, 12.5% becomes 12.5 ÷ 100 = 0.125. Therefore, the correct answer is 0.125.

First, apply the 10% discount: $85 - ($85 * 0.10) = $76.50. Then, add 6% tax: $76.50 + ($76.50 * 0.06) = $80.91. Thus, the total cost is $80.91.