Problema Solution
The total cost of lunch is $16.38 including 5% sales tax. How much of the total bill is tax?
Answer provided by our tutors
let the cost of lunch before tax is x
total bill is 16.38
x+5%x=16.38
x+5/100x=16.38
105/100x=16.38
x=16.38*100/105
x=$15.6
tax is 16.38-15.6= $0.78