Solve the problem.
-A quality-control inspector examined 300 calculators and found 7 of them to be defective. At this rate, how many defective calculators will there be in a batch of 6000 calculators?
A) 2100
B) 3
C) 140
D) 20

Question

Quizplus · Accepted Answer

The rate of defective calculators is 7 out of 300. To find the number of defective calculators in a batch of 6000, use the proportion 7/300 = x/6000, solving for x gives x = (7/300)*6000 = 140.

Solve the Problem. -A Quality-Control Inspector Examined 300 Calculators and Found 7 of Found