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A trader allows 20% discount on the mark...

A trader allows 20% discount on the marked price of his articles. If the marked price is Rs. 150 and gain per cent is 20%, then find the cost price of each article.

Text Solution

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Marked price = Rs. 150
Percentage of discount = 20%
`S =80% of 150 = ((80)/(100)) xx 150 = Rs. 120`
S= Rs. 120 and gain % = 20%
S = 120% of C.
`120 = (120)/(100) xx C rArr C = 120 xx (100)/(120) rArr C = Rs. 100`
`therefore " Cost price" = Rs. 100`
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