Question
A bag contains brown and gold marbles in the ratio of 2 : 5. There is a total of 140 marbles in the bag. How many more brown marbles must be added into the bag so that the number of brown marbles will be the same as the number of gold marbles?
2 m

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A bag contains brown and gold marbles in the ratio of 2 : 5. There is a total of 140 marbles in the bag. How many more brown marbles must be added into the bag so that the number of brown marbles will be the same as the number of gold marbles?