Question

Mr. Autry bought a hat for $99.90. He also bought a pair of boots for $89.90. What was the total cost of the hat and boots including an 8% sales tax

Answer 1

$204.98

Explanation:

Step 1: Add both item cost

`99.90 + 89.90 = 189.80`

Step 2: Find the sales tax of the result

`(8)/(100)* 189.8 = 15.184`

• Step 1: Convert 8% to fraction
• 
  `8\%= (8)/(100)`
• Simplify
• 
  `(8)/(100) = (2)/(25)`
• Step 2: Convert 189.80 to a fraction
• 
  `189.80 = (189.8)/(1)`
• Step 3: Set it up
• 
  `(2)/(25)* (189.8)/(1)`
• Step 4: Cross divide
• 
  `189.80 / 25 = 7.592\\2 / 1 = 2`
• Step 5: Multiply the result
• 
  `7.592 * 2 = 15.184`

Step 3: Add the result from the total cost of both items

`189.80 + 15.184 = 204.98`

The total cost of the hats and boots including sales tax is 204.98 dollars