$\"\"$

Original cost of backpack is $\"\"$ .

The tax is $\"\"$ of price of the back pack.

Find the total price of the back pack.

The tax is $\"\"$ of price of the back pack.

$\"\"$ ( $\"\"$ )

$\"\"$ (Use acaluculator)

Total price of the backpack= Original cost $\"\"$ Amount of sales tax.

$\"\"$

Total price of the backpack is $\"\"$ .

$\"\"$

Total price of the backpack is $\"\"$ .