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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
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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
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Nov 23, 2018
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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
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Vadimtrifonov
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by proportion 38 / 840 = x / 43000
x = 38*43,000 / 840 = 1,945 answer
Reza Ameri
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Nov 27, 2018
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Reza Ameri
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