A DVD player was marked down by 30 percent from its original price of $75. Including a 7 percent sales tax, what is the final cost of the DVD player?

A 30% markdown reduces the $75 price by $75 × 0.30 = $22.50, so the sale price is $75 − $22.50 = $52.50. Add 7% sales tax by multiplying by 1.07: $52.50 × 1.07 = $56.175, which rounds to $56.18. The final cost is $56.18.

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