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Mathematics 21 Online
OpenStudy (anonymous):

A factory makes tennis balls. Every tennis ball must meet a quality standard, or it will be rejected. The percentage that meets the quality standard is 99.8%. If 20,000 tennis balls are made, then about how many are expected to be rejected? A 40 B 400 C 19,900 D 19,960

OpenStudy (here_to_help15):

i got A

OpenStudy (here_to_help15):

Multiply those 2

OpenStudy (here_to_help15):

and you get 19960

OpenStudy (here_to_help15):

40 more and it will be 20,000

OpenStudy (here_to_help15):

so 40 will be rejected and 19,960 wont

OpenStudy (anonymous):

I got A to

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