Question
Asked Sep 27, 2019
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a bag contains 6 red marbles , 5 yellow marbles and 7 green marbles , how many additional red marbles must be added to the 18 marbles already in the bag so that the probability of randomly drawing a red marble is 3/5 ? 

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Expert Answer

Step 1

Finding the number of additional red marbles added:

Let x be the required number of additional red marbles.

Total number of marbles=18+x.

Total number of red marbles=6+x.

Then the probability ...

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