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      Question

      Komal and Seema individually can complete a task in

      โ€˜2aโ€™ hours and โ€˜5aโ€™ hours respectively. If they together can complete halfย of the work in 5 hours, then find the value of โ€˜aโ€™.
      A 4 Correct Answer Incorrect Answer
      B 5 Correct Answer Incorrect Answer
      C 6 Correct Answer Incorrect Answer
      D 7 Correct Answer Incorrect Answer

      Solution

      According to the question, => 5 x [(1/2a) + (1/5a)] = 1/2 => 5 x (7/10a) = 1/2 => a = 7

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