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Mathematics 21 Online
OpenStudy (anonymous):

medal and fan! i just need to know if i did it right A large bag of marbles contains red (R) and blue (B) marbles. Marbles are pulled one at a time, recorded, and placed back in the bag. Estimate the percentage of blue marbles in the bag. R R R B R R R R R R B R R R B 25% 60% 80% 20%

OpenStudy (anonymous):

i got 20%

OpenStudy (stevetron):

yes u got it right

OpenStudy (anonymous):

its wrong

OpenStudy (anonymous):

can you explain how to do it ?

OpenStudy (anonymous):

ok first of all how many marbles are there in all?

OpenStudy (anonymous):

15

OpenStudy (anonymous):

how many blue?

OpenStudy (anonymous):

3

OpenStudy (anonymous):

3/15 yup ur right lol

OpenStudy (anonymous):

sowwy

OpenStudy (anonymous):

its fine thank you !

OpenStudy (anonymous):

\[3/15=0.2=20\]

OpenStudy (anonymous):

20%

OpenStudy (stevetron):

if there is 15 red and 3 blue calculate it by doing 3\15 which = .2 which = 20 which equals 20%

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