The sum of three numbers is 104. The first number is 6 more than the second. The third number is 3 times the first. What are the numbers?

Let A bc the first number

Let B be the second number

Let C be the third number

A= b+6

C= 3a

Step-by-step explanation:

Hope this helps :) Have a great day

You can set up a proportion like this:



Notice how the samples are represented in the numerator and the defective iPhones in the denominator.  Since you don't know the number of defective iPhones in the 100,000 sample, you leave it as x.

Use cross multiplication to solve from here:

100000 * 12  =  1500 * x
1200000  =  1500x
x = 800

There are 800 iPhones expected to be defective in a sample of 100,000.