Rate of discount = (12 / 80) x 100% = 15%
10% profit - 10% loss = 6
? 20% of cost price = Rs. 6
? Cost Price = (6 x 100)/ 20 = Rs. 30.
2 x + y = 7000 ....(i)
x + 2 y = 9800 .....(ii)
Solving (i) and (ii), we get,
y = 4200
Let C.P. = Rs. x then, 425 - x = x - 355
? 2x = 780
? x = 390
Loss% ( common gain or loss % / 10)2
= ( 5/10 )2 = 1/4 % = 0.25%
Loss% = (Common gain or loss% / 10)2
= (10 / 10)2 = 1%
Let the cost price be Rs. 100.
So market price = 100 + 10% of 100 = 110
Selling price = 110 - 10% of 110 = 99.
So, net loss = 1%
Let C.P. = Rs. 100
? Marked price = Rs. 120,
? S.P. = Rs. 108
? Rate of discount = (12/120) x 100% = 10%
Let the cost price of article be P.
So from question,
Selling price = P + P%
? 144 = P + (P x P)/100
? 144 x 100 = 100P + P2
? P2 + 100P - 14400 = 0
? (P - 80)(P +180) = 0
? P = 80
Price after 1 st discount = 80% of Rs. 160 = Rs. 128
Price after 2nd discount = 90% of Rs. 128 = Rs. 115.20
Let C.P. per kg be Rs. x then,
x - 10% of x = 5.40
? x = 6
? Required S.P. = Rs. [6 + 20% of 6] = Rs. 7.20
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