SOLUTION: if a car factory checks 360 cars and 8 of them have defects how many will have defects out of 1260

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Question 978974: if a car factory checks 360 cars and 8 of them have defects how many will have defects out of 1260
Answer by ikleyn(52778) About Me  (Show Source):
You can put this solution on YOUR website!

Let us assume that the defected cars are  "uniformly distributed"  in the total set of cars.

Then we can write the proportion  8%2F360 = x%2F1260  for the unknown amount  x  of defected cars among  1260  cars.

Solving the proportion for  x  you get

x = 8%2A1260%2F360 = 8%2A3.5 = 28.

Answer.  We can expect  28  defected cars.