Question

Tan took Lily to his friend’s restaurant on a date. The friend told the waiter to remove the $12 dessert from Stan’s bill. Stan tipped the waiter 20% on the reduced bill, which was a $15 tip. Fill in the blanks to write an equation that will determine the amount of the original bill, b.(2 points)

Answer 1

The original bill, b, can be determined by the equation:

b - 12 + 0.2(b - 12) = b - 12 + 0.2b - 2.4 = b - 14.4 = 15