SOLUTION: A woman buys three board games for $107.10, including tax. If each board game costs $34, what is the sales tax rate? Express the problem as an equation whose solution is the sales

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Question 190474This question is from textbook
: A woman buys three board games for $107.10, including tax. If each board game costs $34, what is the sales tax rate? Express the problem as an equation whose solution is the sales tax rate and then solve the equation.
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This question is from textbook

Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
let sales tax =t....sales tax rate = t(100)
:
3(34)+3(34)t=107.1
:
102+102t=107.1
:
102t=5.1
:
t=.05(100)=5% sales tax rate