Question

1. shannons mom took her to dinner for her birthday. their dinners totaled $80 and sales tax was 5%. if shannons mom left a 20% tip on the cost of their dinners before tax, how much money did she spend in all?

Explanation:

Step1: Calculate sales tax amount

Tax = $80 \times 5\% = 80 \times 0.05 = 4$

Step2: Calculate tip amount

Tip = $80 \times 20\% = 80 \times 0.2 = 16$

Step3: Sum all costs

Total = $80 + 4 + 16$

Answer:

$100$