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Fiona left a $13.05 tip at a restaurant. The tip was 18% of the total bill. (a) What was Fiona's total bill before the tip? Show how you found your answer (b) Fiona had $90 in cash. How much change did she receive after paying the bill and the tip? Show how you found your answer.

User Aafulei
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a. Fiona's total bill before the tip was approximately $72.50.

b. Fiona received $4.45 in change after paying the bill and the tip.

How to find Fiona's total bill before the tip

(a) To find Fiona's total bill before the tip, set up the equation:

Tip amount = Total bill * Tip percentage

Given that the tip amount is $13.05 and the tip percentage is 18%, we have:

$13.05 = Total bill * 0.18

To solve for the total bill, divide both sides of the equation by 0.18:

Total bill = $13.05 / 0.18 ≈ $72.50

Therefore, Fiona's total bill before the tip was approximately $72.50.

(b) To find out how much change Fiona received after paying the bill and the tip, subtract the total bill and the tip from the cash she had:

Change = Cash - (Total bill + Tip amount)

Given that Fiona had $90 in cash and we found that the total bill was $72.50 and the tip was $13.05, we have:

Change = $90 - ($72.50 + $13.05)

= $90 - $85.55

= $4.45

Therefore, Fiona received $4.45 in change after paying the bill and the tip.

User David Sugar
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