contestada

a restaurant customer left $1.80 as a tip. The tax was 8% and the tip was 20% of the after tax cost

Respuesta :

Divide tip by portion of bill:

1.80/0.20 = 9.00

The total bill before the tip was $9.00

Divide total bill by 1+ sales tax rate:

9.00 / 1.08 = 8.33

The bill before tax was $8.33