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Question

A shopkeeper sells goods worth ₹x at y% discount. Find the value at which the goods are being sold. Determine this value, if the good is worth ₹100 beings sold at 20% discount.

A
₹60
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B
₹70
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C
₹80
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D
₹90
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Solution

The correct option is C ₹80
Let the price of the good be x and the discount is y%.Amount off = y100×x = xy100Price being sold at = x xy100For x = 100 and y = 20,Price = 100 100×20100 = 100 20 = 80

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