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You choose a marble at random from a bag containing 12 red, 12 blue, 15 green, 9 yellow, and 12 black marbles.

Write the probability of the marble is red: as a fraction
as a decimal
and as a percent

User Yidne
by
7.5k points

1 Answer

7 votes

You add the marbles together for the denominator.

So 60 marbles altogether. 12/60. This simplifies down to 1/5. Hope this helps.

User BTSM
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