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 given below the columns.  

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

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

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

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

    Correct Answer: A

    Solution :

    P = Rs. 350, S.I = Rs. 105, T = 6 years \[R=\frac{S.I\times 100}{R\times T}\] \[=\frac{105\times 100}{350\times 6}\] R = 5% p.a. P = Rs. 150, S.I = Rs. 36, Rs. = 6% p.a. \[T=\frac{S.I\times 100}{P\times R}\] \[=\frac{36\times 100}{150\times 6}\] T = 4 years P = Rs. 8500, Rs. = 18%, T = 3 years \[S.I=\frac{P\times R\times T}{100}\] \[=\frac{8500\times 18\times 3}{100}\] = Rs. 4590 Amount = P + S.I = 8500 + 4590 = Rs. 13090 P = Rs. S.I = Rs. 570, R = 5%, T = 3 years \[P=\frac{S.I\times 100}{R\times T}\] \[=\frac{570\times 100}{5\times 3}\] = Rs. 3800


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