Question
There was an equal number of gold and green balls in a packet at first. After 18 green balls were taken out and 36 gold balls were added into the packet, there was 13 as many green balls as gold balls. Find the number of green balls in the packet at first.
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There was an equal number of gold and green balls in a packet at first. After 18 green balls were taken out and 36 gold balls were added into the packet, there was 13 as many green balls as gold balls. Find the number of green balls in the packet at first.