2. Questions Bank
  3. 9th Class
  4. Mathematics
  5. Related to Competitive Exam

9th Class Mathematics Related to Competitive Exam Question Bank Arithmetic

  • question_answer
    If two cars are moving towards North with the speeds 40 km/hr and 25 km/hr respectively, then their relative speed will be

    A)  5 km/hr              

    B)         15 km/hr  

    C)  25 km/hr       

    D)         35 km/hr

    Correct Answer: B

    Solution :

     Here, the two speeds are \[40\,\,km/hr\] and\[25\,\,km/hr\].                 \[u=40\,\,km/hr\] and        \[v=25\,\,km/hr\] Relative speed\[=(u-v)km/hr\].                   \[=(45-25)km/hr\].                   \[=15\,\,km/hr\]. Hence, the relative speed of the two cars is\[15\,\,km/hr\].


You need to login to perform this action.
You will be redirected in 3 sec spinner