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A researcher performs an experiment to test a hypothesis that involves the nutrients niacin and retinol. She feeds one group of laboratory rats a daily

A researcher performs an experiment to test a hypothesis that involves the nutrients niacin and retinol. She feeds one group of laboratory rats a daily diet of precisely27.04units of niacin and19,985units of retinol. She uses two types of commercial pellet foods. Food A contains0.11unit of niacin and115units of retinol per gram. Food B contains0.37unit of niacin and80units of retinol per gram. How many grams of each food does she feed this group of rats each day?

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