15% loss = .85c =x

15% profit = 1.15c= y

now

(y-x)/(y+x) = (1.15-0.85)/(0.85+1.15) = 0.3/2 = 3/20

]]>Discounted price = 60*(100-40)/100 =36rs

On selling at 36 RS he gains 20% so we have to maintain same price

Now 10 articles are destroyed so mp of 50 articles is 50 RS.

And we have to sell at 36 RS so discount = 14 RS

% discount = (14/50)*100 = 28%

Hence option D

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A 30

B 23

C 24

D 28

]]>Sir is it wrong?

]]>Quoted price : 2Y

Profit on quoted price : 2Y - X

Profit on 1/2 of quoted price : Y - X

40% of ( 2Y - X) = Y - X.

X/Y = 1/3

Profit Margin : 100 x ( 3-1)/2 = 66.66%

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25

75

66.66

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