Question
Yesterday, Oscar had 45 as many yellow as purple marbles. He sold 18 of his purple marbles today. Now, he has twice as many yellow as purple marbles. How many marbles did he have altogether yesterday?
4 m

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Yesterday, Oscar had 45 as many yellow as purple marbles. He sold 18 of his purple marbles today. Now, he has twice as many yellow as purple marbles. How many marbles did he have altogether yesterday?