Author Topic: STUBID MATH...  (Read 193 times)

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Offline Amethyst Moon

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STUBID MATH...
« on: April 30, 2017, 04:40:15 pm »
Ok, so i need halp im a 7th grader who is not the brightest and well yeah. I got A and B but C?????

A. The probabibly of getting a yellow marble or P(Yellow) is 2/3. What is P(Blue or/and green)? *1/3*
B. P(green) 1/4. What is P(Blue)? *3/4*
C. There are 24 marbles in the bag. How many are blue?

I only need halp for C.
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Offline Red Velvet

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Re: STUBID MATH...
« Reply #1 on: April 30, 2017, 04:43:47 pm »
The answer to C would be 3/4 of the P for blue/green. So, if you have 24 marbles, and 1/3 of them are blue OR green, then that means 8 of them could be blue or green.

If P for green is 1/4, then 3/4 of of that bag is either blue or yellow. So the answer to 2 is wrong.

ok so if P out of 24 for green is 1/4 that means there are 6 green marbles, so

THERE ARE ONLY 2 BLUE MARBLES

OK GOT IT


#3 is 2 blue marbles, which means #2 would be 1/12 probability
« Last Edit: April 30, 2017, 04:48:12 pm by Red Velvet »
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