4
Direction (3-5):
Read the given information and answer the questions that follows.
For doing a certain work, A is 60% more efficient than B, and B is 10% less efficient than C. C alone can complete the same work in 36 hours. They started the work together.
Ram could complete a job alone in 6 days but Sunil would take thrice the time to do it alone. They started the work together but Ram had to leave a few days before the completion of the work and sunil had to complete the remaining task by himself. If, as a result, it took 6.75 days in all to complete the job, for how many days did the duo work together?