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1. Recently, the Smiths had dinner at a local restaurant. Their waiter was very attentive and the food was delicious. They decided the waiter earned a 20% tip for his efforts. If their bill came to $54.86, how much will they leave as the tip? 2. The Martins need a new living room couch. The couch they like costs $2,700. The salesperson told the Martins that the couch will be on sale next month for 30% off. If the sales tax rate in their city is 6.5%, how much will the Martins pay, including sales tax, if they wait until the couch goes on sale?

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1. Recently, the Smiths had dinner at a local restaurant. Their waiter was very attentive and the food was delicious. They decided the waiter earned a 20% tip for his efforts. If their bill came to $54.86, how much will they leave as the tip? First, set up a proportion to find the amount of the tip. tip percent = tip amount 20 = x 100 bill amount 100 $54.86 Use CMAD to find the tip amount – remember its money, so $10.97 would be the tip. 10,972

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2. The Martins need a new living room couch. The couch they like costs $2,700. The salesperson told the Martins that the couch will be on sale next month for 30% off. If the sales tax rate in their city is 6.5%, how much will the Martins pay, including sales tax, if they wait until the couch goes on sale? First, set up a proportion to find the discounted price of the couch. discount percent = discount amount 30 = x 100 original price 100 $2,700 Use CMAD to find the discount amount of $810. Then, SUBTRACT the discount amount to find the new, sale price. $2,700-$810 = $1,890. Next, find the sales tax using another proportion. 6.5 = x Use CMAD to find the sales tax amount of $122.85 100 $1,890 Finally, ADD the sales tax to the sale price to find your out the door cost. $1,890 + $122.85 = $2,012.85 81,000 12,285

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