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Pure Water Products produces two types of water filter. One attaches to the faucet and cleans all water that passes through the faucet. The other is a pitcher-filter that only purifies water meant for drinking. Revenue and cost information for each product appears below: the unit that attaches to the faucet is sold for $65 per unit and has variable costs of $31 per unit the pitcher-filter sells for $42 per unit and has variable costs of $16 per unit fixed costs total $180, 400 . Pure Water sells 9 faucet models for every 4 pitcher-filters sold Calculate the number of units of the pitcher-filter product that must be sold in order for Pure Water Products to earn a target profit equal to $122, 590