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Answer :
Final answer:
To find the probability of drawing a blue marble from a bag with 15 red and 20 blue marbles, divide the number of blue marbles by the total number of marbles, giving a probability of 4/7.
Explanation:
The question asks for the probability of drawing a blue marble from a bag containing 15 red and 20 blue marbles. To find this, we use the probability formula: Probability of an event = (Number of ways the event can happen) / (Total number of outcomes). Here, the number of ways to draw a blue marble is 20 (since there are 20 blue marbles), and the total number of marbles is 35 (15 red + 20 blue). Therefore, the probability of drawing a blue marble is 20/35, which simplifies to 4/7.
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