Question

Henry went shopping for a new pair of sneakers. The listed price of the pair of sneakers was $42, but the price with tax came to $46.20. Find the percent sales tax.

Answer 1

42(1 + x) = 46.2

42 + 42x = 46.2

42x = 46.2 - 42

42x = 4.2

x = 4.2/42

x = 1/10

x = 1/10 * 10/10

x = 10/100

x = 10%