I just need help with a question.

For this question all we simply do is divide 72 by 480. This will give us the decimal .15. The decimal can be converted from here to percent by being multiplied by 100. .15*100=15%.

So 72 is 15% of 480.

Another way this can be solved is to divide 480 by 100%. This will show us what 1% of 480 is. All we do then, is divide the number who's percent we're trying to find, in this case 72, and we get our answer in percent.

480u/100%=4.8u/% (The u is a unit place holder just so you can see more accurately how this is done. The 4.8u/% can be read as 4.8 unites per percent)

72u/4.8u/%=15%