7th Class Mathematics Fractions and Decimals Question Bank Fractions and Decimals

  • question_answer Manav took 4 minutes to complete a race comprising three rounds. The time taken to complete the first and the second round is \[\frac{3}{4}\] min and \[1\frac{1}{2}\] min respectively. How much time was taken by Manav to complete the last round?

    A) \[2\frac{1}{2}\] min                  

    B)  \[3\frac{1}{3}\] min

    C)  \[1\frac{3}{4}\]min      

    D)  None of these

    Correct Answer: C

    Solution :

    (c) Time taken for last round\[=4-\frac{3}{4}-1\frac{1}{2}\] \[=4-\frac{3}{4}-\frac{3}{2}=\frac{16-3-6}{4}=\frac{7}{4}=1\frac{1}{4}\]        

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