Question

On a string of lights there are 200 bulbs. After many years of use, 19 of them have burned out. Approximately what percentage of bulbs have burned out?

Answer 1

8.5% (you can approximate that, that's the exact number and it isn't too funky)

Explanation:

Percentage is out of 100, and over here we see that 200 is 2 times the amount of 100. So that means that if we divide 200 by 2, we get 100, which means we also divide 19/2 to get 8.5. That means, out of 100 light bulbs, 8.5 of them burned out. This is really easy to convert because the percentage is already out of 100, so you just make 8.5 into a percent which is 8.5%

Let me know if you have any questions.