Three companies A, B and C supply 25%, 35% and 40% of the notebooks to – McqOptions

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1.	Three companies A, B and C supply 25%, 35% and 40% of the notebooks to a school. Past experience shows that 5%, 4% and 2% of the notebooks produced by these companies are defective. If a notebook was found to be defective, what is the probability that the notebook was supplied by A?
A.	44⁄69
B.	25⁄69
C.	13⁄24
D.	11⁄24
Answer» C. 13⁄24

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