Give the step-by-step reasoning process and then the final answer. James decides to make a bathtub full of jello. For every pound of water, you need 1.5 tablespoons of jello mix. The bathtub can hold 6 cubic feet of water. Each cubic foot of water is 7.5 gallons. A gallon of water weighs 8 pounds. A tablespoon of jello mix costs $0.50. How much did he spend to fill his tub?
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The tub has 6 * 7.5 = 45 gallons. That would weigh 45 * 8 = 360 pounds. So he needs 360 * 1.5 = 540 tablespoons of jello mix. So he spent 540 * .5 = $270.
The final answer: 270.
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