Posted by Jen on Thursday, July 28, 2011 at 1:04pm.
A bag contains 7 lavender marbles, 11 turquoise marbles and 5 rainbow marbles. What is the chance of drawing a lavender marble? If a lavender marble is drawn then placed back into the bag, and a second marble is drawn, what is the probability of drawing a turquoise marble? Give solutions exactly in reduced fraction form, separated by a comma

Mathconfused!  Ms. Sue, Thursday, July 28, 2011 at 1:14pm
7 + 11 + 5 = 23 marbles
7/23 is the first answer.
What do you get for the second answer?

Mathconfused!  Jen, Thursday, July 28, 2011 at 1:16pm
is it 11/23??

Mathconfused!  Ms. Sue, Thursday, July 28, 2011 at 1:28pm
Right.
See  that's not so hard. :)

Mathconfused!  Jen, Thursday, July 28, 2011 at 1:30pm
really? i didn't think it was that easy...so it's 7/23 and 11/23???
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