Mathematics, 04.05.2021 20:30 ciya12

In 1990 , the postal was 25 cents for the first ounce and 20 cents for each additional ounce part of an ounce. What did it cost to mail a package that weighed ounces?

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In 1990 , the postal was 25 cents for the first ounce and 20 cents for each additional ounce part of...