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OpenStudy (anonymous):
ut of 1,100 discs tested, 13 are defective. Estimate the number of defective discs in a batch of 41,000. A. about 485 discs B. about 970 discs C. about 4,850 discs D. about 49 discs
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OpenStudy (anonymous):
Out**
OpenStudy (anonymous):
A) 12*41000/1100
OpenStudy (anonymous):
Could U Guys Please Explain How U Got The Answer? (:
OpenStudy (anonymous):
Okay, so 13 out of 1100 are defective. So: 13/1100 = y/41000 Cross multiply to get: y = (13x41000)/1100 y = 484.54545454 Which rounds to 485
OpenStudy (anonymous):
yes.
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OpenStudy (anonymous):
Ok Thanks U Guys! (:
OpenStudy (anonymous):
yea
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