- Option : C
- Explanation :
Let CP be x

∴ MP = 1.8 x

∴ SP of 15 articles = 12 * 1.8x = 21.6x

∴ Discount = 0.9 x 21.6x = 19.44x

∴Profit on 15 articles = (19.44 - 15)x

∴ Profit % =(4.44x/15x) = 29.6%

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- Option : B
- Explanation :
Rate in which the rent is to be divided = 4 : 8 : 12

A's share of rent= (8/24) * 6000 =Rs.2000

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- Option : B
- Explanation :
C.P. of goods for the trader = Rs.22520

S.P. = 125 x 22520 = Rs.28150

∴ Profit = Rs.5630

Now, 5630 = 0.0536 x 5000 + 0.085 x 10000 + (x/100)* 7520

=>5630 =268 - 850 + 75.2x

=>75.2x = Rs.4512, which is nothing but profit from sale of third lot.

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10. Buy two and get one free. Which of the following is true?

- Option : C
- Explanation : Profit or loss of the sale depends upon how much profit the person is earning on the sale of two articles. If SP > CP of 1 article, there is a profit. If SP < CP of 1 article, there is a loss. If SP = CP of 1 article, there is not profit no loss. Thus, only (c) is true.

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