Question
John had 6 more black buttons than red buttons at first. His aunt then gave him 16 black buttons and his schoolmates gave him 130 red buttons for Christmas. John realised that he now had four times as many red buttons as black buttons. How many buttons did John have in the end?
4 m

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John had 6 more black buttons than red buttons at first. His aunt then gave him 16 black buttons and his schoolmates gave him 130 red buttons for Christmas. John realised that he now had four times as many red buttons as black buttons. How many buttons did John have in the end?