Question

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

Answer 1

Out**

Answer 2

A) 12*41000/1100

Answer 3

Could U Guys Please Explain How U Got The Answer? (:

Answer 4

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

Answer 5

yes.

Answer 6

Ok Thanks U Guys! (:

Answer 7

yea