Mathematics, 31.08.2019 01:00, mrstealyogirl40

Carlos is saving up to buy two new books. he had saved 60% of the cost of one book that cost $18, and 30% of the cost of another book that cost $21. how much more does he need to save?

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Carlos is saving up to buy two new books. he had saved 60% of the cost of one book that cost $18, an...