Question

A​ quality-control inspector examined 100 light bulbs and found 7 defective. At this​ rate, how many defective bulbs would there be in a lot of 2500 ​bulbs?

Answer 1

Answer: 175 defective bulbs.

Step-by-step explanation:

1. Keeping on mind that the inspector examined 100 light bulbs and found 7 defective, you can calculate the number of defective bulbs that there would be in a lot of 2500 ​bulbs as following:

- Let's call the number of defective bulbs that there would be in a lot of 2500 ​bulbs $x$.

- Then, you have:

$\frac{100}{7}=\frac{2500}{x}$

- Solve for x:

 $x=\frac{2500*7}{100}$

$x=175$

2. Then, there would be 175 defective bulbs  in a lot of 2500 ​bulbs.