(06.02)A bag contains 40 marbles, 4 of which are blue, 10 are red, 25 are green, and 1 is purple. Shawna takes a marble out of the bag, records the color, and returns it to the bag. How many green marbles should she expect after 400 trials?
25
40
100
250

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can anybody help?

so the expected number in 400 tyrials is 400 * 5/8

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