Question
Gabby had 80 more marbles than Tiffany at first. Tiffany gave 10 of her marbles to Gabby. Gabby now has 3 times as many marbles as Tiffany. How many marbles did Tiffany have at first?
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Gabby had 80 more marbles than Tiffany at first. Tiffany gave 10 of her marbles to Gabby. Gabby now has 3 times as many marbles as Tiffany. How many marbles did Tiffany have at first?