The only thing you can do here is to try to simplify, so I'll assume that's what you want to do.

The numerator is a difference of squares, so it's easy to factorize:

In the denominator, we factorize by grouping:

So we have

Answer:
Option c ==> 5/12 is the answer
The answer is 625 because you first need to find 12.5 times 4. 12.5 times 4 equals 50. 50 times 12.5 equals 625. Hopefully this helped c:
50%. 60/2=30 or 60*.5=30. Dividing by two or multiplying by .5 are the same as taking 50%, meaning that there was a 50% discount