8th Class Mathematics Comparing Quantities Question Bank Commercial Mathematics

  • question_answer
    DIRECTIONS: Match Column-I with Column-II and select the correct answer using the codes give below the columns.  

    A) \[A\to s;\,B\to q,\,C\to p;\,D\to r\]

    B)  \[A\to r;\,B\to p,\,C\to q;\,D\to s\]

    C) \[A\to s;\,B\to q,\,C\to r;\,D\to p\]

    D)  \[A\to q;\,B\to s,\,C\to p;\,D\to r\]

    Correct Answer: C

    Solution :

    A: \[P%\,=\frac{P}{C.P}\times 100=\frac{20}{80}\times 100=25%\] B: \[R=\left( \frac{S.I.\times 100}{P\times T} \right)\,=\frac{105\times 100}{700\times 3}\,=5%\] C: \[S.I=\frac{P\times R\times T}{100}\,=\frac{20500\times 3\times 5}{100}\] = Rs. 3075 D: \[P=\frac{S.I\times 100}{R\times T}\,=\frac{100\times 100}{5\times 1}\,=2000\]


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