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The price of an article is increased by 25%. By how much per cent must this new value be decreasedto restore it to its former value! |
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Answer» if price is increased by 25% then new price =1.25*x let new price be decreased by y percent so as to RESTORE original price 1.25*x-1.25*x*y÷100=x 1.25*x*(1-y÷100)=x 1-y÷100=1÷1.25 y=(1-1÷1.25)*100 y=20percent |
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