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The amount of body fat on an average man is 19.0% of his total mass. Tim has a body mass of 80.0 kg and it is determined that 24.0% of his total mass is body fat. He decides to swim 0.500 h each day until his body fat has been reduced to the average.

If his daily caloric intake and energy output are equal before he begins swimming and he does not change his caloric input, how many days must he swim to reach his goal?

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