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There are at most 36 red and blue marbles in a bag. The number of red marbles is twice the number of blue marbles. Write and solve an inequality tang represents the greatest number of red marbles r in the bag.

Respuesta :

x - blue marbles (x>0)
2x - red marbles

There are at most 36 marbles.
x + 2x ≤ 36
3x ≤ 36
x ≤ 12
2x ≤ 24

The greatest number of red marbles in the bag is 24.

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