Mathematics, 08.09.2020 14:01 Serenitybella

Mark and Don are planning to sell each of their marble collections at a garage sale. If Don has 3 more than 4 times the marbles Mark has, how many does each boy have to sell if the total number is 78?

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Mark and Don are planning to sell each of their marble collections at a garage sale. If Don has 3 mo...