by selling an article for rupees 810 a man loses 10% .find the cost price
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sp=810
loss%= 10
cp = (100)*810
(100-10)
(100)*810
(90)
(10)*810
(9)
10*90
900
loss%= 10
cp = (100)*810
(100-10)
(100)*810
(90)
(10)*810
(9)
10*90
900
sorry mistake
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= 100 / (100+25) x 400
= (100 / 125) x 400
= Rs 320
SP of the article for a gain of 20%
= [(100 + g) / 100] x CP
= [(100 + 20) / 100] x 320
= [120 / 100] x 320
= Rs 384