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Nathan took his car in for service and repairs. He had a coupon for 10% off. Original Prices • Labor $252.73 • Parts $329.62 • Other $62.85 Which amount is closest to Nathan's total costs after the 10% discount and including 7% sales tax? [Assume tax is applied after the discount is applied.] a $540 b $621 c $536 d $581



Answer :

arewar
252.73 + 329.62 + 62.85 = 645.20

Sales tax: 645.20 * 1.07 = 690.36

(We use the 1 in the 1.07 to preserve the original value. You could also do 645.20 + (645.20 * 0.07)).

Discount: 690.36 - (690.36 * .10)

Simplify: 690.36 - 69.04

Solve: 621.32 (B)

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