Question
There were 311 red, white and green marbles in a packet. Given that there were 111 more red marbles than green marbles and 68 more white marbles than green marbles, how many green marbles were there in the packet?
4 m

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There were 311 red, white and green marbles in a packet. Given that there were 111 more red marbles than green marbles and 68 more white marbles than green marbles, how many green marbles were there in the packet?