Posted by **ssss** on Friday, April 13, 2012 at 8:21pm.

Mr Tan had a box of marbles. 2/3 of the marbles were blue and the rest were yellow. He gave his son 4/5 of the blue marbles and 3/4 of the yellow marbles. If he had 39 marbles left, how many marbles did he have at first?

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