if a computer costs $600.00 and the sales tax rate is 7.5 percent, what is the total cost of the…
if a computer costs $600.00 and the sales tax rate is 7.5 percent, what is the total cost of the computer?\n$607.50\n$615.00\n$622.50\n$645.00
Answer
Explanation:
Step1: Calculate sales tax amount
The sales - tax amount is calculated by multiplying the cost of the computer by the sales - tax rate. The sales - tax rate of 7.5% can be written as 0.075 in decimal form. So the sales - tax amount $t$ is $t = 600\times0.075$. $t=600\times0.075 = 45$
Step2: Calculate total cost
The total cost $C$ of the computer is the sum of the original cost and the sales - tax amount. So $C=600 + t$. $C = 600+45=645$
Answer:
$645.00$, so the answer is $$645.00$ (the last option).