Cost of running shoes after 20% off = $60.23
let us find what was the original price of shoes.
Let us say original price was $x
Now according to question we have 20% off this original price x.
So 20% of x = 0.2x
price after discount = original price - discount = x-0.2x
Now we have 20% of x equal to $60 ( discounted price)
Forming an equation:
x-0.2x =60
0.8x =60
dividing both sides by x ,we have
x=$75
So original price was $75.