If a car factory checks 360 cars and 8 have defects, how many will have defects out of 1260?

We can expect  28  defected cars.

Step-by-step explanation:

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.

if x = 1, then the answer is 3.5