Question

After adding an 18% service charge, the price of dinner was $142.78 What was the price before the service chat was added?

Answer 1

to do this problem you need to understand one thing exactly. that to increase a number by 18% is identical to multiplying it by 1.18

Answer 2

then although you do not know the original price P, you know that
\[1.18P=142.78\] and so
\[P=142.78\div 1.18\]

Answer 3

i hope you meant "divide"

Answer 4

yes, you did, and you are correct!

Answer 5

no you did it correctly because $121 is the right answer

Answer 6

yw