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Question
Oranges are bought at 5 for Rs. 10 and sold at 6 for Rs. 15. Find profit or loss as per cent.
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Solution
L.C.M. of 5 and 6 = 30
Let 30 oranges be brought.
∴ C.P. of 30 oranges = `(30 xx 10)/5` = Rs. 60
and S.P. of 30 oranges = `(30 xx 15)/6` = Rs. 75
Gain = S.P. - C.P.
= Rs. 75 - Rs. 60 = Rs. 15
∴ Gain % = `("gain" xx 100)/"C.P"`
`= (15 xx 100)/60 = 25%`
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