Question
A bag contains silver and red balls in the ratio of 2 : 5. There is a total of 147 balls in the bag. How many more silver balls must be added into the bag so that the number of silver balls will be the same as the number of red balls?
2 m

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A bag contains silver and red balls in the ratio of 2 : 5. There is a total of 147 balls in the bag. How many more silver balls must be added into the bag so that the number of silver balls will be the same as the number of red balls?