Norma Engel buys a microwave for $149.99, a microwave cart for $119.95, a microwave cookware for $19.95. The sales tax rate is 5.5 percent. what is the total purchase rate

Total before the sales rate:

$149.99+$119.95+$19.95 = $289.89

The 5.5% Sales tax is on the total, then:

the amount of the taxe is 5.5% x 289.89 = = = > (5.5 x 289.89) / 100 = 15.944

The sales tax is to be added to the total, that is 289.89 + 15.944 = $305.834