8th Class Mathematics Comparing Quantities Question Bank Commercial Mathematics

  • question_answer
    At.................... rate of simple interest will Rs. 350 amount to Rs. 455 in 6 years.

    A) 4% p.a.           

    B)          5% p.a.

    C) 7% p.a.           

    D)          6% p.a.

    Correct Answer: B

    Solution :

         \[S.I=\frac{P\times R\times T}{100},\] S.I = A ? P = 455 ? 350 = Rs. 105 \[\Rightarrow \]            \[R=\frac{S.I\times 100}{P\times T}\,=\frac{105\times 100}{350\times 6}\] \[\Rightarrow \]            \[R=5%\,p.a.\] Match the Column MCQ


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