The tax rate is 6 %
Solution:
Given that, A man purchased a magazine at the airport for $ 2.89
The tax on the purchase was $ 0.18
To find: tax rate in percentage
From given,
Magazine price = 2.89
Tax amount = 0.18
Therefore, tax percent is given as:
Let "x" be the tax percent
x % of magazine price = tax amount
x % of 2.89 = 0.18
Solve the equation for "x"
![x \% * 2.89 = 0.18\\\\(x)/(100) * 2.89 = 0.18\\\\2.89x = 0.18 * 100\\\\2.89x = 18\\\\Divide\ both\ sides\ by\ 2.89\\\\x = 6.22 \approx 6](https://img.qammunity.org/2021/formulas/mathematics/middle-school/fyr5sstrkavecojsgurgpimkjuze4rkcd3.png)
Thus tax rate is 6 %