The sales tax rate is 6.9%. a. find the tax paid for a pair of boots with a list price of $128. b. what is the total cost of the pair of boots?

 $136.83

Step-by-step explanation:

Given : Sales tax rate = 6.9% =0.069

The list price of a pair of boots = $128

Then, the sales tax amount = Sales tax ×  List price

The sales tax amount

Now, the total cost of the pair of boots = Sales tax amount +List price

= $8.832+128

=$136.832≈ $136.83   [Rounded to the nearest cent]

Hence, the total cost of the pair of boots = $136.83

a=24; b=12

step-by-step explanation:

a/b=2: 1

a=2b

36/(1+2)=12

b=12

a=24