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Mathematics 12 Online
OpenStudy (anonymous):

A battery manufacturer randomly tests 500 batteries and finds that 3 are defective. How many defective batteries would be expected in a shipment of 12,000 batteries? A. 120 B. 72 C. 60 D. 36

OpenStudy (rhystic):

12000/500 = 24 sets of 500 and you know for every set of 500 batteries 3 are defective so 24*3 = ?

OpenStudy (anonymous):

So 72?

OpenStudy (rhystic):

yes

OpenStudy (anonymous):

Thanks

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