If the city should buy copy paper that was 75 % recycled content ( 55 % pre-consumer and 20 % post-consumer) or 50 % recycled content paper ( 10 % pre-consumer and 40 % post-consumer).

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Chapter 1, Problem 1.11P

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If the city should buy copy paper that was 75% recycled content ( 55% pre-consumer and 20% post-consumer) or 50% recycled content paper ( 10% pre-consumer and 40% post-consumer).

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