Question
A bag contains blue and silver marbles in the ratio of 2 : 11. There is a total of 143 marbles in the bag. How many more blue marbles must be added into the bag so that the number of blue marbles will be the same as the number of silver marbles?
2 m

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A bag contains blue and silver marbles in the ratio of 2 : 11. There is a total of 143 marbles in the bag. How many more blue marbles must be added into the bag so that the number of blue marbles will be the same as the number of silver marbles?