Question
A bag contains purple and yellow beads in the ratio of 3 : 7. There is a total of 150 beads in the bag. How many more purple beads must be added into the bag so that the number of purple beads will be the same as the number of yellow beads?
2 m

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A bag contains purple and yellow beads in the ratio of 3 : 7. There is a total of 150 beads in the bag. How many more purple beads must be added into the bag so that the number of purple beads will be the same as the number of yellow beads?