hello
the cost of the sale tax = 1400
the percentage of the tax = 7%
selling price = ?
[tex]\begin{gathered} 7=\frac{1400}{x}\times100 \\ \frac{7}{100}=\frac{1400}{x} \\ \text{cross multiply both sides } \\ 7\times x=100\times1400 \\ 7x=140000 \\ \text{divide both sides by 7} \\ \frac{7x}{7}=\frac{140000}{7} \\ x=20000 \end{gathered}[/tex]from the calculation above, the selling price of the car is 20,000
