Work time, Pipes cisterns practice questions and sample problems - Ascent Education - TANCET, XAT Coaching classes

Ascent Education - IIM, CAT, XAT, TANCET, MBA Entrance Training Classes
TANCET '18 Classroom Program
Other Courses
Other Links
Contact Us
+91 44 4500 8484
+91 96000 48484
Facebook / Twitter / Blog / Videos
Follow Ascent Education's TANCET prep on Facebook   Follow Ascent's TANCET prep on Twitter   TANCET MBA prep blog   TANCET MBA prep videos   Google+

Pipes cisterns, Work time Sample Question

The given question is a work time question and tests your ability to relate to the relation between the number of days it takes two people to do a task to their efficiency of completing the task.

Question 1

Ram completes 60% of a task in 15 days and then takes the help of Rahim and Rachel. Rahim is 50% as efficient as Ram is and Rachel is 50% as efficient as Rahim is. In how many more days will they complete the work?
  1. 13 1/3

  2. 8 1/3

  3. 5 5/7

  4. 7 5/7

  5. None of these
Correct choice is (3). Correct Answer is 5 5/7

Explanatory Answer

Ram completes 60% of the task in 15 days.
i.e., he completes 4% of the task in a day.

Rahim is 50% as efficient as Ram is.
Therefore, Rahim will complete 2% of the task in a day.

Rachel is 50% as efficient as Rahim is
Therefore, Rachel will complete 1% of the task in a day.

Together, Ram, Rahim and Rachel will complete 4 + 2 + 1 = 7% of the work in a day.
They have another 40% of the task to be completed.
Therefore, they will take 40/7 more days to complete the task.

CAT, XAT, TANCET Practice Questions and Answers : Listed Topicwise


Add to Add to Stumble It Stumble It digg this digg this

Privacy Policy | Terms of Use | © 2002 - 17 Ascent Education. All rights reserved.