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

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