DaxtonRiggs DaxtonRiggs

15-12-2017
Mathematics

contestada

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

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Аноним Аноним

15-12-2017

by proportion 38 / 840 = x / 43000

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

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