Question

If a computer costs $600.00 and the sales tax rate is 7.5 percent, what is the total cost of the computer?

Answer 1

7.5% of $600 is $45

So instead of subtracting you add because its tax (keyword for add/multiply)

So your answer is $645

Answer 2

Find out the what is the total cost of the computer .

To proof

As given

a computer costs $600.00

sales tax rate is 7.5 percent .

7.5 % is written in decimal form

`= (7.5)/(100)`

= 0.075

Sales tax on the computer cost = 0.075 × 600.00

= $45

Total cost of the computer = computer cost + sales tax cost

= 600.00 + 45

= $645.00

= $645

Therefore total cost of the computer is $645 .

Hence proved