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Mathematics 9 Online
OpenStudy (anonymous):

A bag contains 30 marbles, 3 of which are blue, 20 are red, 5 are green, and 2 are purple. Emerson takes a marble out of the bag, records the color, and returns it to the bag. How many purple marbles should he expect after 300 trials? 20 30 50 200

OpenStudy (anonymous):

@pooja195 help if you can

OpenStudy (anonymous):

Well, a chance of getting a purple once would be 2/30, so first, multiply 300 to 2, and 300 to 30.

OpenStudy (anonymous):

300 x 2 = ?

OpenStudy (anonymous):

tha would be 600

OpenStudy (anonymous):

Yes, and 300 x 30 = ?

OpenStudy (anonymous):

9,000

OpenStudy (anonymous):

is this right?

OpenStudy (anonymous):

Yes, so make it a fraction.

OpenStudy (anonymous):

600/900

OpenStudy (anonymous):

You mean 9000.

OpenStudy (anonymous):

So yes, it is 600/9000. :)

OpenStudy (anonymous):

|dw:1419266163336:dw| lol

OpenStudy (anonymous):

Wait, but what would the answer be...?

OpenStudy (anonymous):

30?

OpenStudy (anonymous):

Yeah, I think.

OpenStudy (anonymous):

ok thx so much for your help. and you both are very nice

OpenStudy (anonymous):

hi

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