Question
A bag contains blue and brown beads in the ratio of 2 : 7. There is a total of 90 beads in the bag. How many more blue beads must be added into the bag so that the number of blue beads will be the same as the number of brown beads?
2 m

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A bag contains blue and brown beads in the ratio of 2 : 7. There is a total of 90 beads in the bag. How many more blue beads must be added into the bag so that the number of blue beads will be the same as the number of brown beads?