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प्रश्न
The original price of an article is ₹ 640. Find its new price when its price is decreased by 20%
उत्तर
Original price of an article = ₹ 640
Decrease in price = 20%
∴ Decrease by 20%, the new price will be
= `₹640xx((100-20))/100`
= `₹640xx80/100`
= ₹ 512
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