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2) At the post office, Tiffany paid $11

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2) At the post office, Tiffany paid $11.04 for 24 stamps. At this rate, how much would it cost for Tiffany to buy 18 stamps? 3) At a factory, there are 40 new cars produced every 8 hours. How many cars can be produced in a 40-hour week? What is the rate of cars produced per hour? 4) A grocery store sign indicates that bananas are 6 for $1.50, and a sign by the oranges indicates that they are 5 for $3.00. Find the total cost of buying 2 bananas and 2 oranges.