Stan took Lilly to his friends restaurant on a date. The friend told the Waiter to remove the $12.00 dessert from the bill. Stan tipped the waiter 20% on the reduced bill, which was a $15.00 tip. Fill in the blanks to write an equation that will determine the amount of the original bill.

Question

___(b-12)=15
Please help. The Answer is not $87.00
I need help with the first Blank

Answer 1

Let's call the original bill amount "b". Since the friend told the waiter to remove the $12.00 dessert from the bill, the reduced bill would be "b-12".

Now we can set up the equation to determine the amount of the original bill:

20% of the reduced bill = $15.00

Writing this equation in mathematical form:

0.20(b-12) = 15

So the first blank would be 0.20.