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7th Class Mathematics Comparing Quantities Question Bank Comparing Quantities

  • question_answer
    By selling an article for Rs.600 a man loses 20%. At what price should he sell it in order to gain 25%?

    A)  Rs.800                 

    B)         Rs.750

    C)  Rs.937.50             

    D)         Rs.1000

    Correct Answer: C

    Solution :

     We have \[\frac{S.{{P}_{1}}}{100+{{x}_{1}}}=\frac{S.{{P}_{2}}}{100+{{x}_{2}}}\] \[\Rightarrow \] \[\frac{600}{100-20}=\frac{S{{P}_{2}}}{100+25}\] \[S.P2=Rs.\,\,600\times \frac{125}{80}=Rs.\,\,937.50\]


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