Answer:
$5.40
Explanation:
A tax is a compulsory sum levied by the government or an agency of the government on goods and services. Taxes increase the price of good. The items bought would increase by 8%
Tax paid by Dave = 0.08 x $15 = $1.2
total price paid by Dave = 1.2 + $15 = $16.2
Tax paid by Mel = 0.08 x $20 = $1.6
total price paid by Mel = $20 + $1.6 = $21.60
Difference in prices
21.6 -16.2 = $5.40