Question
Erika had four times as many beads as Mary. After Mary bought another 77 beads, Mary had 2 times as many beads as Erika. How many beads did Erika have?
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Erika had four times as many beads as Mary. After Mary bought another 77 beads, Mary had 2 times as many beads as Erika. How many beads did Erika have?