New NABARD Grade A 2024 Results out!! Register here for a free live workshop on Feb 26, 2025 at 5 PM. Only on Zoom.

    Question

     Ajay, Bablu and Chirag can complete a certain work in

    21, 28 and 15 days respectively. Ajay and Chirag started the work while Bablu joined them after 3 days and worked with them till the completion of the work. For how many days Bablu worked?
    A 92/21 Correct Answer Incorrect Answer
    B 37/29 Correct Answer Incorrect Answer
    C 24/23 Correct Answer Incorrect Answer
    D 63/29 Correct Answer Incorrect Answer

    Solution

    Ajay     Bablu   Chirag 21        28        15             420                  LCM of 21,28,15 20        15        28 Ajay And Chirag both working 3 days = (20+28) ×3=144 Remaining work=420-144=276 Remaining work complete by Ajay Bablu and Chirag =276/63 =92/21=4(8/21) days

    Practice Next

    Relevant for Exams: