Each of two urns contains green balls and red balls. Urn 1 contains 8 green balls and 12 red balls. Urn 2 contains 5 green balls and 8 red balls. If a ball is drawn from each urn, what is P(red and red)?
a. 79/65
b. 24/65
c. 20/33
d. 2/13

No one wanted to help in Jiskha, so can somebody here help a girl out?? @peak ANYONE

Question

Each of two urns contains green balls and red balls. Urn 1 contains 8 green balls and 12 red balls. Urn 2 contains 5 green balls and 8 red balls. If a ball is drawn from each urn, what is P(red and red)? 
a. 79/65 
b. 24/65 
c. 20/33 
d. 2/13 

No one wanted to help in Jiskha, so can somebody here help a girl out?? @peak ANYONE

mathstudent55 · Answer

Find each probability and multiply them.

mathstudent55 · Answer

First, answer these questions:

Urn 1
How many red balls?
Total number of balls?

Urn 2
How many red balls?
Total number of balls?

anonymous · Answer

Okay, so for Urn 1 it is 12/20 and Urn 2 is 8/13. 12 x 20 = 240 and 20 x 13 = 260. So so far I have 240/260. That can be simplified to 12/13

anonymous · Answer

...But that's not an answer...

mathstudent55 · Answer

Make sure you multiply the fractions correctly.
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