# A, B and C can Complete a Work in 10, 12 and 15 days Respectively :

A, B and C can complete a work in 10, 12 and 15 days respectively. A left work 5 days before the work was completed and B left 2 days after A had left. Number of days required to complete the whole work was :

- 6
- 25/3
- 20/3
- 7