SOLUTION: 20% of the students in Mr. MacGregor’s class earned As on their final projects. 5% of the students who received As on their final projects also received As on their final exams. Fi

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Question 814740: 20% of the students in Mr. MacGregor’s class earned As on their final projects. 5% of the students who received As on their final projects also received As on their final exams. Find the probability that a student chosen at random received an A on both the final exam and the final project.
A. 0.01
B. 0.05
C. 0.10
D. 0.50
Please help me to understand how to get the answer, the way I keep trying isn't getting any of these choices.
Thanks
Answer by ewatrrr(24785)   (Show Source): You can put this solution on YOUR website!
 

Hi,

 20/100  0r 1/5 of the students received an A on the final project

5% of the students who received As on their final projects also received As on their final exams    

 (1/100  students did both) 

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