The 5% sales tax on a basket was $0.70. What was the price of the basket?
Use a proportion to solve the problem; part/whole = %/100. The whole is the price of the basket (which is unknown, so call it x), the part is the tax of $0.70, and the % is 5. The proportion is 0.70/x = 5/100. Solve the proportion by cross-multiplying, setting the cross-products equal to each other, and solving as shown below.
0.70 /x = 5/100
(100)(0.70) = 5x
70 = 5x
70 /5 = 5x/5
x = 14
The price of the basket was $14.