He bill was $50 and the sales tax was 8.5%. Mary left a 20% tip on the amount after the sales tax was applied. How much did Mary pay in total?

His total was $65.10 with bill, tax, and tip after sales tax.

Step-by-step explanation:

Given:

Bill = $50

Tax = 8.5% or 0.085

Tip = 20% or 0.20

Solve:

$50 * 8.5% = $50 * 0.085 = $4.25

The tax equals $4.25.

$50 + 4.25 = $54.25

Bill with tax equals $54.25.

Key word is after the sales tax was applied:

$54.25 * 20% = $54.25 * 0.20 = $10.85

The tip after the sales tax equals $10.85.

$50 + $4.25 + $10.85 = $65.10

His total was $65.10 with bill, tax, and tip after sales tax.

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80 the answer is 80

step-by-step explanation: