8th Class Mathematics Comparing Quantities Question Bank Comparing Queantities

  • question_answer Find the principal it S.I. is Rs. 50, time period is \[\mathbf{2}\frac{1}{4}\]years and rate percent per annum is \[\mathbf{l}\frac{1}{2}\] %.

    A)  Rs.1582                       

    B)  Rs.1430\[\frac{26}{27}\]

    C)  Rs.1481\[\frac{13}{27}\]

    D)  Rs. 1300

    Correct Answer: C

    Solution :

      (c): S.I = Rs. 50.0 \[T=2\frac{1}{4}\]years =\[\frac{9}{4}\]years \[r=\frac{3}{2}%\] \[\Rightarrow 50=P\times \frac{9}{4}\times \frac{3}{200}\] \[\Rightarrow P=50\times \frac{9}{4}\times \frac{200}{3}\] \[=\frac{40000}{27}=1481\frac{13}{27}\]


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