Nathan took his car in for service and repairs. He had a coupon for 15% off.

Original Prices

• Labor $210.87
• Parts $366.47
• Other $77.24

Which amount is closest to Nathan's total costs after the 15% discount and including 7% sales tax? [Assume tax is applied after the discount is applied.]

$556

$511

$595

$517

Question

Nathan took his car in for service and repairs. He had a coupon for 15% off.

Original Prices

• Labor $210.87 
• Parts $366.47 
• Other $77.24

Which amount is closest to Nathan's total costs after the 15% discount and including 7% sales tax? [Assume tax is applied after the discount is applied.]

$556

$511

$595

$517

anonymous · Answer

help please

ddcamp · Answer

First, find the 15% discount:
What's 100% - 15%?

anonymous · Answer

85

ddcamp · Answer

Yup. So he'll be paying 85% of the total price. 
Discount price = 85% of initial price = 0.85 * initial price.

What's the discounted price before tax?

anonymous · Answer

im confused

ddcamp · Answer

OK. I guess I should have started with:
What is the total price before any tax or discounts?
Once we have that, we'll find the price after he uses the coupon.
Then, we'll find the final price after tax.