Question

Out of 25 light bulbs tested, 1 was found to be defective. Out of 2000 light bulbs, how many would you expect to be defective?

Answer 1

80

Explanation:

If 1/25 lightbulbs were defective, you can set up a ratio to figure out the number of lightbulbs if 2000 were made.

`(1)/(25) =(x)/(2000)`

Cross multiply.

`25x=2000`

Divide both sides by 25.

`(2000)/(25) =80`

Hope this helps! :)