a leaf blower was marked up 150% from an original cost of $80. last friday, lee bought the leaf blower and…

Explanation:

Step1: Calculate the marked - up price

The original cost is $80. The mark - up is 150% of $80. First, find the mark - up amount. The mark - up amount $m$ is $150%\times80=\frac{150}{100}\times80 = 1.5\times80=120$. The marked - up price $p$ is the original cost plus the mark - up amount, so $p = 80 + 120=200$.

Step2: Calculate the sales tax amount

The sales tax rate is 7.75%. The sales tax amount $t$ on the marked - up price of $200$ is $t=7.75%\times200=\frac{7.75}{100}\times200 = 7.75\times2 = 15.5$.

Step3: Calculate the total cost

The total cost $C$ is the marked - up price plus the sales tax amount. So $C = 200+15.5 = 215.5$.

Answer:

$215.5$