CTET Maths - Algebra
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%
- Option : B
- Explanation : According to the formula, Gain percentage = Error / (True Error -Error) X 100% . = [100/ (1000-100)] x 100% = (100/900) X 100% = 100/9 %
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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