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oksian1 [2.3K]
3 years ago
9

One ball is to be selected from a box containing red, white, blue, yellow, and green balls. If the probability that the selected

ball will be red is 1/10, the probability that it will be white is 2/5, and the probability that it will be blue is 1/5, what is the probability that it will be yellow, or green
Mathematics
1 answer:
ZanzabumX [31]3 years ago
5 0

Answer:

30% probability that it will be yellow, or green

Step-by-step explanation:

The urn has red, white, blue, yellow, and green balls.

Each ball is chosen with the following probabilities:

1/10 = 10% probability it is red

2/5 = 40% probability it is white

1/5 = 20% probability it is blue.

p probability it is yellow or green

What is the probability that it will be yellow, or green

The sum of all probabilities is 100%. So

10 + 40 + 20 + p = 100

p = 30

30% probability that it will be yellow, or green

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Answer:

Option D) 15%

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It would be easier to think it through if instead for 70 we took the number 100. Lets reword it and say what percent of 100 is 38? This would be easy to answer it would be 38% But how you check it is, you take 38 and divide by the total (100) which is .38 then multiply by 100 you will get 38% Same with your equation take the 10.5 and divide by the total amount which is 70 you will get .15 then multiply by 100. the answer will be 15%

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