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Exercise 20

Avg difficulty 2.5

Use the problem solving process with a combination of operations, unit conversions and/or geometric formulas to solve the problem. Document your steps and thinking.

You just got a circular above ground pool with a 15-foot diameter and a height of 48 inches. You want to know the cost of the water to fill it up to 6 inches from the top and how much chlorine to put in. The package says to use two 3-inch tablets per 10,000 gallons of water. City of Portland water is measured and billed at a rate of $7.559 per 100 cubic feet(ccf). One ccf is 748 gallons.

Lee et al., Math in Society, Logical Reasoning and Problem Solving — Chapter 1 Review, Exercise 20

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