Question

Et one factory the ratio of defective bulbs produced to the total light bulbs produced is 3:500. How many light bulbs are expected to be defective when 12,000 are produced?

Answer 1

The answer is:

3 : 500 = x : 12000

x = (3*12000)/500

x = 36000/500

x = 72

72 light bulbs are expected to be defective when 12000 are produced.