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Mathematics, 17.08.2019 17:20 Mrlittlefish

Abike shop uses two manufacturing plants, one in region a and the other in region b, to build its bicycles. twice as many bicycles are built in region b as in region a. the percentage of defective bikes from region b is two times that from region a. all bicycles are sent to a central warehouse, and one bicycle is chosen for inspection. if the bicycle is defective, find the probability that it came from region upper b.

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