A single LED has a light output of 100 lumens. How many such LEDs are needed?

Question

If an LED lighting system needs to provide 1000 lumens of light output, and a single LED has a light output of 100 lumens, how many such LEDs are needed?

Answer 1

Answer: 10.

Answer analysis: To determine how many individual LEDs are needed to achieve 1000 lumens of light output, we can use a simple ratio or division.

First, we know that the light output of a single LED is 100 lumens.

Then, we set the target light output to 1000 lumens.

Next, we divide to find the number of LEDs required:

Number of LEDs required = Target light output / Light output of a single LED

= 1000 lumens / 100 lumens/LED

= 10

Therefore, to provide 1000 lumens of light output, we need 10 of these LEDs.