‘A’ can do a work in 10 days, ‘B’ in 12 days and ‘C’ in 15 days. They started doing work together but after 2 days of starting of work, ‘A’ left and 4 days before completion, ‘C’ left the work, In how many days work was finished ?
1
65/7 days
2
67/9 days
3
64/9 days
4
66/8 days