SOLUTION: There are two cookie jars on the shelf in the kitchen. The red one has 10 chocolate chip cookies and 15 gingersnaps. The blue jar has 20 chocolate-chip cookies and 10 gingersnaps.

Algebra ->  Probability-and-statistics -> SOLUTION: There are two cookie jars on the shelf in the kitchen. The red one has 10 chocolate chip cookies and 15 gingersnaps. The blue jar has 20 chocolate-chip cookies and 10 gingersnaps.      Log On


   



Question 321495: There are two cookie jars on the shelf in the kitchen. The red one has 10 chocolate chip cookies and
15 gingersnaps. The blue jar has 20 chocolate-chip cookies and 10 gingersnaps. James goes down in the
middle of the night and without turning on the light chooses a jar at random. If the cookie is chocolate chip,
what is the probability that he got the cookie from the blue jar?

Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
2/3 of the chocolate chip cookies (20/30) are in the blue cookie jar

so if James selects a chocolate chip cookie , the probability is 2/3 that it came from the blue jar