Answer:
0.48 ; 6.8571428%
Explanation:
Given that:
Cost of item = $7
Cost of item including sales tax = $7.48
The sales tax = (cost of item including sales tax - cost of item)
Sales tax = $7.48 - $7 = $0.48
Sales tax percent :
Let sales tax percent = x
x% of item cost = sales tax
x/100 * 7 = 0.48
0.01x * 7 = 0.48
0.07x = 0.48
x = 0.48 / 0.07
x = 6.8571428
Sales tax percent = about 6.858