SOLUTION: A bill at officeland totaled $37.80. How much did the merchandise cost if the sales tax is 5%?

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Question 179880: A bill at officeland totaled $37.80. How much did the merchandise cost if the sales tax is 5%?
Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
Since it wasnt said I will assume the 37.80 includes the sales tax
:
lets call the merchandise cost x
:
x+.05x=37.80
:
1.05x=37.80
:
highlight%28x=36.00%29cost of merchandise
:
which means the tax was $1.80