Question

1. what is the total cost for four tires that sell for $85 each, plus 5% gst and a 1.5% environment tax?

Explanation:

Step1: Calculate pre-tax total cost

$\text{Pre-tax cost} = 4 \times 85 = 340$

Step2: Calculate total tax rate

$\text{Total tax rate} = 5\% + 1.5\% = 6.5\% = 0.065$

Step3: Calculate total tax amount

$\text{Total tax} = 340 \times 0.065 = 22.1$

Step4: Calculate final total cost

$\text{Total cost} = 340 + 22.1 = 362.1$

Answer:

$\$362.10$