Problema Solution
In a sample of 24,000 new Iphones, 19 were found to be defective, At this rate, how many defective Iphones would be expected in a sample of 840,000 new Iphones? Use a proportion to set up and solve this problem. Write a complete answer including units.
Answer provided by our tutors
Let 'x' represent the number of defective phones in a sample of 84,000.
x : 84000 = 19 : 24000
........
click here to see the equation solved for x
........
x = 665 defective Iphones
665 Iphones are expected to be defective in a sample of 840,000 new Iphones.