Ez.1. Price of a commodity has incr...
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Ez.1. Price of a commodity has increased by 60%. By what per cent must a consumer reduce the con- sumption of the commodity so as not to increase the expenditure ? SSC CGL (Tier-2014 (1) 37% (2) 37.5% (3) 40.5% (4) 60%

11th - 12th Class
Maths
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43
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Sol. (2) If the reduction in consumption be ( x % ), then [ begin{array}{l} 60-x-frac{60 x}{100}=0 Rightarrow 60-x-frac{3 x}{5}=0 Rightarrow 300-5 x-3 x=0 Rightarrow 8 x=300 Rightarrow x=frac{300}{8}=37.5 % end{array} ]
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