A company that sell light fixtures, displayed a ad that caintain 18 hall way fixtures. of these fixtures 2 take 3 bulbs each. today 14 light bulbs were replace. what percent of the light bulbs is in the display of hallway fixtures

Solution:

The number of bulbs = 3*18 = 54, so there are 54 light bulbs in the display of hallway fixtures. Today 14 light bulbs were replaced, so (54-14=40) are remaining.

So the percent of the light bulbs is in the display of hallway fixtures = 40/54 = 74.07%.