Question
There was an equal number of yellow and green marbles in a packet at first. After 21 green marbles were taken out and 33 yellow marbles were added into the packet, there was 13 as many green marbles as yellow marbles. Find the number of green marbles in the packet at first.
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There was an equal number of yellow and green marbles in a packet at first. After 21 green marbles were taken out and 33 yellow marbles were added into the packet, there was 13 as many green marbles as yellow marbles. Find the number of green marbles in the packet at first.