Tax on a $25 item is $2.06. A. What should the tax be on a $45 item?

Answer 1

By using proportionality,

$2.06 is to $25 as T is to $45

or

2.06/25=T/45

T=45(2.06)/25=2.06(9/5)=2.06(1.8)=3.71

Solution: $3.71