Question
Sarah had 56 more marbles than Betty at first. Betty gave 16 of her marbles to Sarah. Sarah now has 3 times as many marbles as Betty. How many marbles did Betty have at first?
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Sarah had 56 more marbles than Betty at first. Betty gave 16 of her marbles to Sarah. Sarah now has 3 times as many marbles as Betty. How many marbles did Betty have at first?