DaxtonRiggs
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Out of 840 discs tested, 38 are defective. Estimate the number of defective discs in a batch of 43,000.


about 3,890 discs

about 195 discs

about 1,945 discs

about 19,450 discs

Respuesta :

by proportion 38 / 840  = x / 43000

x = 38*43,000 / 840  =   1,945  answer

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