The final price after applying a 20% discount on a product is x. Find the marked price of the product in terms of x.
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False
Let the marked price of the product be y.
Rate of discount = 20%
So, x = 80% of y = 80100×y =0.8y
y=x0.8 = 1.25x
After allowing a discount of 20% on the marked price of a lamp, a trader loses 10%. By what percentage is the marked price above the cost price?