777777 / 11 = 70707.
Let the original cost of each cooker be Re. 1 and let the number sold originally be 100.
Total sale proceeds = Rs. (100 x 1) = Rs. 100
New rate = (115% of Re. 1 ) = Rs . 1.15
Number sold now = 85
? Sale proceed now = Rs. (1.15 x 85) = Rs. 97.75
So, there is a decrease of 2.25% in the money receipt.
Let the S.P. be Rs. P
Then, C.P. paid by subhash = Rs. (9 x P)/10
S.P. received by subhash = (108% of Rs. P) = Rs. (27 x P) / 25
? Gain = Rs.(27 x P) / 25 - (9 x P) / 10 = Rs. (9 x P) / 50
Hence, Gain% = (9P / 50) x (10P / 9) x 100 % = 20%
Suppose he buys 10 lemons
? C.P. = Rs. 10/2 = Rs. 5,
? S.P. = Rs. (3/5 x 10)% = Rs. 6
? Gain % = (1/5) x 100% = 20%
Let C.P. = Rs. P
S.P. = (C.P.) - (Loos) = P - P/7 = Rs. 6P/7
? 6P / 7 = 144
? P = (144 x 7) / 6 = Rs. 168
Hence, no Loss and no gain.
Let S.P. of T.V. (by trader) = Rs. 100
If S.P. is Rs. 80, then M.P. = Rs. 100
If S.P. is Rs. 100, M.P. = Rs. (100 / 80) x 100 = Rs. 125
Now, if discount is 25% then, S.P. = (75% of Rs. 125) = Rs. 375/4
Difference between two S.P. = Rs. (100 - 375/4) = Rs. 25 / 4
If difference is Rs. 25/4, S.P. = Rs. 100
If difference is Rs. 500, S.P. = Rs.(100 x 4 ) / (25 x 500) = Rs. 8000
Let A's C.P. = Rs. 100
B's C.P. = Rs. 105
C's C.P. = 104% of Rs. 105 = Rs. 109.20
? 109.20 : 91 = 100 : P
? P = (91 x 100) / (109.20) = Rs. 83.33
Let C.P. = Rs. P
Then S.P. = Rs. (90/100) x P = Rs. (9 x P)/10
New C.P. = Rs. (80/100) x P = Rs. (4 x P)/5
Now, Gain = 40%
? New S.P. Rs. (140/100 x 4P/5) = Rs. 28P/25
? 28P/25 - 9P/10 = Rs. 250
Let C.P. = P
Then S.P. = Rs. (110/100 x P) = Rs. 11P/10
New C.P. = Rs. (90/100 x P ) = Rs. 9P/10
New S.P. = (110/100 x 9P) / 100
? 11P/10 - 99P/100 = 132
? P = 1200
? C.P. = Rs. 1200
Let the original rate be 'P' paise per egg.
Number of eggs bought for Rs. 7.80 = 780/P
New rate = (130% of P) paise per egg = 13P/10 paise per egg
Number of eggs bought for Rs. 7.80 = 780 x 10/13P = 600/P
? 780/P - 600/P = 3
? 3P = 180
? P = 60
So, present rate = (13 x 60)/10 paise per egg = 78 paise per egg
= Rs. 9.36 per dozen
It is clear that (2.5% of C.P. + 7.5% of C.P.) = 100
? C.P. = Rs. 1000
Now, gain = 121/2
So, Required S.P. = 1121/2% of C.P.
= Rs. (225 / 200) x 1000
= Rs. 1125
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