An electric pump was sold at a profit of 15 % . Had it been sold.for Rs., 600 , profit would have be

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7.Profit and Loss

medium

An electric pump was sold at a profit of $15 \% .$ Had it been sold.for $Rs.\, 600$ , the profit would have been $20 \% .$ The former selling price is in $Rs.?$

$500$

$540$

$575$

$600$

Old Profit $\%=\frac{15}{100}=\frac{( SP )_{1}- CP }{ CP }$$…(i)$

New Profit$\%$ $=\frac{20}{100}=\frac{( SP )_{2}- CP }{ CP }$ $…(ii)$

$=$ From $(ii),$ we get $C P=R s .500$ $\left[\right.$ Here $,( SP )_{2}=$ $Rs$. $\left.600\right]$

Divide $(i)$ and $(ii);$

$\frac{3}{4}=\frac{( SP )_{1}-500}{600-500}$

Hence, $( SP )_{1}=$ Former Selling price $= Rs .575$

Standard 13

Quantitative Aptitude

medium

easy

medium

hard

medium