? Cost price of article = ? 100
? Selling price of the article for 20% profit
= 100 x (100 + 20)/100 = ? 120
Hence, marked price of the article for 4% discount
= 120 x 100/(100 - 4)
= 120 x 100/96
= ? 125
Advertised price of the item = ? N
? Commission on advertised price of the article = ? (N x 23)/100
Price after commission = N - (23N/100) = ? 77N/100
? CP of the item = [(77N/100) x 100]/(100 + 10) = 77N/110 = ? 7N/10
Profit = 77N/100 - 7N/10 = ? 7N/100
? 56 = 7N/100
? N = (56 x 100)/7 = ? 800
Single equivalent discount per cent to 25% and 5%
= r1 + r2 - (r1 . r2)/100 %
= 25 + 5 - (25 x 5)/100
= 30 - 1.25
= 28.78 %
? Required difference = [(30 - 28.75) x 2000]/100
= 1.25 x 2000/100 = ? 25
Let the cost price of item = ? N
? Marked price of item = N x (100 + 30)/100 = ? 13N/10
Selling price of the item after two successive discount = (13N/10) x[ (100 - 10)/100 x (100 - 10)/100]
= (13N/10) x (90/100) x (90/100) = ? 1053N/1000
Increment in the price of item = [{(1053N/1000) - N} / N] x 100 %
= 53/10 %
= 5.3 %
? S.P of the notebook = ?457
? Commission on one notebook = ? (4 x 457)/100
and commission on 10 notebooks = 10 x (4 x 457)/100 = ? 18280
Now,S.P of the pencil box = ? 80
? Commission on 1 pencil box = ? (80 x 20)/100
Commission on 6 pencil boxes = (80 x 20 x 6)/100 = ? 96
Hence ,total commission of 1 day = (182.80 + 96 ) = ? 278.80
Thus, total commission of 2 weeks = 278.80 x 14 = ? 3903.20
Let rate of second discount = r %
MP = ? 3200 , SP = ? 2448 ,
r1 = 10 % and r2 = r %
? y = MP x (100 - r1/100) (100 - r2/100)
? 2448 = [3200 x (100 - 10) x (100 - r)] / (100 x 100)
? (2448 x 100 x 100) / (3200 x 90) = 100 - r
? r = 100 - 85 = 15 %
CP of watch = ? 450
SP of watch = 450 x [(100 + 20)/100] = ? 540
? List price of watch = (540 x 100) / (100 - 10) = ? 600
Let MP = ? N
? SP = N x (100 - 10)/100 = ? 9N/10
? CP = (9N/10) x [100/(100 + 20)] = ? 3N/4
Thus, CP has to be increased by = [(N - 3N/4) / (3N/4)] x 100%
= [(N/4) / (3N/4)] x 100 %
= 331/3 %
Let MP of the article = ? N
? C P of the article = (N x 64) / 100 = ? 16N/25
And SP of the article = [N x (100 - 12)]/100 = ? (N x 22)/25
? profit = [ 22N/25 - 16N/25 ] = ? 6N/25
Hence, profit per cent = [(6N/25) / (16N/25)] x 100%
= (6 x 100)/16 = 37.5%
Let MP of the article = ? N
? SP of the article = N x (100 - 10)/100 = ? 9N/10
? CP of the article = [(9N/10) x 100]/(100 + 20)
= (9N x 10)/120
= ? 3N/4
Now, new SP of the article = [N x (100 - 20)]/100 = ? 4N/5
New profit = 4N/5 - 3N/4 = (16N - 15N)/20 = ? N/20
Hence, profit per cent = [(N/20) / (3N/4)] x 100 %
= (4 x 100)/(3 x 20) %
= 62/3%
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