Zack bought a coat for 69.78. He paid with a a $100 bill and received $26.73 in change. How much was the sales tax?

1 Answer
Nov 5, 2016

Answer:

The sales tax amounted to #$3.49#

Explanation:

If we represent the sales tax as #x#, it can be calculates as the difference between #$100# and the cost price plus change received. The equation will be:

#x=100-(69.78+26.73)#

Add the numbers in the brackets and then subtract that from #100#.

#x=100-96.51#

#x=3.49#