SOLUTION: A college professor�s work responsibilities include answering student questions, preparing lectures and grading papers. On Wednesday, Greg, a college professor, spent 1 hour answer

Question 284375: A college professor�s work responsibilities include answering student questions, preparing lectures and grading papers. On Wednesday, Greg, a college professor, spent 1 hour answering student questions, 2 hour preparing lectures and 8 hours grading papers. If Greg�s work hours on Thursday are spent approximately the same way they were on Wednesday, what are the chances that at any given moment on Thursday Greg will be preparing lectures or answering student questions?
This is how I solved it, but I think I am off track. Please help. Thanks
Chance that Greg will be preparing lectures is 2hr/(1hr+2hr+8hr) = 2/11
Chance that Greg will be answering students questions is 1hr/(1hr+2hr+8hr) = 1/11
Chance that Greg will be preparing lectures or answering students questions is 2/11+1/11=3/11

Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
Don't make it more complicated than it is.
You seem to be ok
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