Question

If x is 20% less than y, find : `("y" - "x")/"y"`

Answer 1

Let y = 100

then reduction = 20% = 20

then x = 100 - 20 = 80

`("y" - "x")/"y" = (100 - 80)/100 = 20/100 = 1/5`  ...(Dividing by 20)