Question

If you bought something in Wyoming for $89, you would be charged $3.56 in state sales tax. What is the state sales tax rate in Wyoming?

Answer 1

Let the answer be x percent:

So we say: the tax is x% of the price, 

this means: $3.56 is x% of $89


"something %" means 1/100 times something,

thus, we write and solve the following equation:


$\displaystyle{ 3.56= \frac{x}{100}\cdot 89$

$3.56\cdot100=x\cdot89$

$356=89x$

$\displaystyle{ x= \frac{356}{89}= 4$



Answer: the tax is 4%