I’m happy to help!
Percentages have regular number counterparts that are used to solve problems. For example, 50% is 0.5. In this case, 30% is .3
So, we first need to find out how much the discount is.
30% of 125:
0.3*125=37.5
Subtract the discount from the original price to get your answer:
125-37.5= $87.50
Hope this helps!