Question
The total mass of 3 story books and 6 manuals is 18 kg. Each story book weighs 3 kg 414 g more than each manual. What is the mass of 1 manual? Express the answer in grams.
4 m

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The total mass of 3 story books and 6 manuals is 18 kg. Each story book weighs 3 kg 414 g more than each manual. What is the mass of 1 manual? Express the answer in grams.