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

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