21. A camera is sold for 4600Rs. If it was sold at a profit of 15%, what was its CP?

- Option : B
- Explanation : In such cases, loss is incurred always.

Thus, the farmer occurs the loss.

Loss percentage =(25)^{2}/100 % = (625/100)%= 6.25%

24. If the cost price is 95% of the selling price, what is the profit percent?

- Option : D
- Explanation : Let SP = 100 Rs. CP = 95 Rs. Profit = (100 - 95)Rs = 5Rs. ProfIt percentage = (profit/ CP) X 100%. = (5/95) X 100% = 5.26%

- Option : A
- Explanation : SP = 120 Rs, Loss percent = 15% ∴ cp = (100/ (100 - Loss%) x SP = 100/85 x 120 = 2400/17 Now, gain percent = 2% ∴ Required SP = (100 + gain%)/100 x CP. =(102/100) X 2400/17 = 144 Rs

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