Question

The probability of selecting a green marble at random from a jar that contains only green, white, and yellow marbles 1/4. The probability of selecting a white marble at random from the same jar is 1/3. If this jar contains 10 yellow marbles, what is the total number of marbles in the jar?

Answer 1

I believe it is twenty four.

Answer 2

No. 24 is the answer.

Answer 3

Okay...

Answer 4

The rest of the question?

Answer 5

Isn't it one question all in one, or is it two questions I am supposed to answer?

Answer 6

the sum of probabilities add up to 1
so can u find the probability of selecting yellow marble??

Answer 7

Oh, I have choices? What are my choices?

Answer 8

okay.

Answer 9

I keep getting 24. Hmm.... I'll have to check the internet.

Answer 10

@sakigirl can u find the probability of selecting yellow marble?

Answer 11

The internet says 24, too.

Answer 12

ok,let me do it.
p(green) + p(white) + p(yellow) =1
so p(yellow) = 1-1/3-1/4=5/12
now probability is defined by favorable events / total events
so
p(yellow) = no. of yellow balls / total balls
total balls = no. of yellow balls/p(yellow)
=10/(5/12)
=10*12/5
=24