Mathematics, 04.06.2020 14:01 juliannabartra

A box weighing 30 kilograms contains several student math books and one teachers edition. if each student book weighs 2.3 kilograms, the box weighs 0.4 kilograms when empty , how many student books are in the box

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A box weighing 30 kilograms contains several student math books and one teachers edition. if each st...