Use Proportional Relationships Unit Test

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Question
Jesse buys his coworkers lunch from the local steakhouse. The food costs $105.79, and the sales tax rate is 9%. Jesse wants to leave a 20% tip based on the pre-tax amount. How much will the total be, including tax and tip?(1 point)

1 answer

To calculate the total amount including tax and tip, first find the amount of sales tax:

Sales tax amount = Food cost * Tax rate
Sales tax amount = $105.79 * 0.09
Sales tax amount = $9.52

Next, find the pre-tax amount:

Pre-tax amount = Food cost + Sales tax amount
Pre-tax amount = $105.79 + $9.52
Pre-tax amount = $115.31

Now, calculate the tip amount based on the pre-tax amount:

Tip amount = Pre-tax amount * Tip rate
Tip amount = $115.31 * 0.20
Tip amount = $23.06

Finally, calculate the total amount including tax and tip:

Total amount = Pre-tax amount + Sales tax amount + Tip amount
Total amount = $115.31 + $9.52 + $23.06
Total amount = $147.89

Therefore, the total amount, including tax and tip, will be $147.89.