Multiple choice

The questions given below contain three statements giving certain data. You have to decide whether the data given in the statements are sufficient for answering the question? In how many days can Rahul finish the whole job? I. Reetesh and Rahul together can finish the job in 30 days. II. Both started work together. After working for 20 days together Reetesh left and remaining work was done by Rahul in 20 days. III. Reetesh alone can finish the job in 60 days.

  1. Any two

  2. I and either II or III

  3. Any one

  4. All I, II and III

  5. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Statement I: Combined rate of Reetesh + Rahul. Statement III: Reetesh's individual rate. From I and III, Rahul's rate can be found. Statement II confirms this but is not needed - once we have individual rates, Rahul's time alone can be calculated. So I and III are sufficient. I and II together also work: from combined rate (I) and the work pattern (II), Rahul's contribution can be derived. Thus I + either II or III works.

Keep practicing — related questions