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