CAT 2018 Slot 1 QA Q8 Time & Work

Question 8 of the Quantitative Ability (QA) section, CAT 2018 Slot 1, with CAT's official answer.

When they work alone, B needs 25% more time to finish a job than A does. They two finish the job in 13 days in the following manner: A works alone till half the job is done, then A and B work together for four days, and finally B works alone to complete the remaining 5% of the job. In how many days can B alone finish the entire job?
  1. A
    16
  2. B
    22
  3. C
    20
  4. D
    18

Answer: (C) 20 Time & Work MCQ

A worked solution for this question is being written. Meanwhile, practise it in a timed mock and see how other aspirants did.

Same concept in other years

See every question on Work completed in phases as workers join, leave or slow down.

More Time & Work questions from CAT

All 34 Time & Work questions asked since 2017.