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Plz help me with these with steps

Plz help me with these with steps-example-1
User JSowa
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1 Answer

6 votes

Answer: There are 100 blue marbles.

Explanation:

252 x 2/7 = 72

72 is the number of the red marbles.

(252-72) x 4/9 = 80

80 is the number of the green marbles.

252-72-80 = 100

There are 100 blue marbles.

User ShakibaZar
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