Question
Adam has 40 green beads and 130 red beads.
After buying the same number of beads,
the ratio of the green beads and the red beads becomes 2 : 5.
How many beads does he buy?
2 m

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Adam has 40 green beads and 130 red beads.
After buying the same number of beads,
the ratio of the green beads and the red beads becomes 2 : 5.
How many beads does he buy?