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.

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:

`(100)/(7)=(2500)/(x)`

- Solve for x:

`x=(2500*7)/(100)`

`x=175`

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