John sold an article for Rs.495 and gained 10% on it.Find the cost price of the article.
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Gain = S.P. - C.P.
Gain % = (Gain/C.P.) * 100
Therefore,
(10 / 100) = Gain / C.P.
0.1 = (S.P. - C.P.) / C.P.
S.P. / C.P. = 1 + 0.1
C.P. = S.P. / 1.1
C.P = 495/1.1
C.P. = 450
Gain % = (Gain/C.P.) * 100
Therefore,
(10 / 100) = Gain / C.P.
0.1 = (S.P. - C.P.) / C.P.
S.P. / C.P. = 1 + 0.1
C.P. = S.P. / 1.1
C.P = 495/1.1
C.P. = 450
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