25. The price of a commodity rises ...
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25. The price of a commodity rises from 6 per kg to 7.50 per kg. If the expenditure cannot increase, the percentage of reduction in consumption is (1) 15% (2) 20% (3) 25% (4) 30%

11th - 12th Class
Maths
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185
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25. (2) because Percentage of increase in price [ begin{array}{l} =frac{7.50-6}{6} times 100 % =frac{1.50 times 100}{6} %=25 % end{array} ] Hence, required per cent ( =frac{25}{100+25} times 100 % ) [ =frac{25 times 100}{125} %=20 % ]
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