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Mathematics 25 Online
OpenStudy (anonymous):

At a factory that produces pistons for cars, Machine 1 produced 408 satisfactory pistons and 102 unsatisfactory pistons today. Machine 2 produced 280 satisfactory pistons and 120 unsatisfactory pistons today. Suppose that one piston from Machine 1 and one piston from Machine 2 are chosen at random from today's batch. What is the probability that the piston chosen from Machine 1 is satisfactory and the piston chosen from Machine 2 is unsatisfactory ?

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