Question
Adam has 30 red beads and 300 blue beads.
After buying the same number of beads,
the ratio of the red beads and the blue beads becomes 2 : 5.
How many beads does he buy?
2 m

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Adam has 30 red beads and 300 blue beads.
After buying the same number of beads,
the ratio of the red beads and the blue beads becomes 2 : 5.
How many beads does he buy?