Question
Christian and Audrey had 220 marbles altogether. After Christian gave 20 marbles to Audrey, Christian had 4 times as many marbles as Audrey. How many marbles did Audrey have at first?
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Christian and Audrey had 220 marbles altogether. After Christian gave 20 marbles to Audrey, Christian had 4 times as many marbles as Audrey. How many marbles did Audrey have at first?