Question

There are 640 marbles in a bag. There are red, blue, and green marbles. After losing a total of 47 green and blue marbles, there are a total of 113 green and blue marbles left. Assuming you still had all the marbles, what are the odds of drawing a red marble two times in a row?

Answer 1

@iGreen @yolo_king335

Answer 2

113 + 47 = ?

Answer 3

160

Answer 4

is 160 the answer @iGreen because that is not one of the answer choices

Answer 5

No..it isn't.

Answer 6

okay so what next?

Answer 7

So we have 160 green and blue marbles..640 - 160 = ?

Answer 8

480

Answer 9

Yes, so we have 480 red marbles.

480/640 is the probability of picking a red..multiply it by itself.

Answer 10

9/16?

Answer 11

I think 9/16 is that right @iGreen

Answer 12

Correct!

Answer 13

thx so much :D