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Mathematics 21 Online
OpenStudy (anonymous):

Will medal & fan for help :-) A jar contains 49 red marbles, 30 blue marbles, and 35 white marbles. You choose a marble from the jar at random. What is the theoretical probability of choosing a blue marble?

OpenStudy (math_man21):

49 +30+35=?

OpenStudy (anonymous):

30/114

OpenStudy (math_man21):

tht too

OpenStudy (math_man21):

then you divide by 2

OpenStudy (math_man21):

depending on what type of color

OpenStudy (anonymous):

@newtonson would you divide by 2 or no ?

OpenStudy (anonymous):

@math_man21 wait wouldnt it be 30/105 not 114 ???

OpenStudy (anonymous):

i dont think to devide by 2

OpenStudy (anonymous):

b'cos it was absolute probability

OpenStudy (anonymous):

so, we take randomly a ball

OpenStudy (anonymous):

an random experiment, and we can take any ball from bunch

OpenStudy (anonymous):

so i think 30/114 is right answer

OpenStudy (anonymous):

@newtonson but how did you get 114 ?

OpenStudy (math_man21):

yeah now that i looked it over

OpenStudy (math_man21):

35 +30+49

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