oriannamaramara oriannamaramara

15-03-2018
Mathematics

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The probability that you randomly select a red marble from a group of 40 marbles is 7/20. how many are red marbles

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ruhibreddy ruhibreddy

15-03-2018

Since probability is number of red by the total number, we need to set the fraction to have a denominator of 40:

7/20 * 2/2
14/40

So, there are 14 marbles.

Hope this helps!

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