A can complete a work in x days and B can complete the same work in (x + 5) days. The efficiency of C is 25% less than that of B and he takes 12 days to complete the work. Find the time taken by all the three working together to complete the work.
1
5 (1/2) days
2
4 (3/4) days
3
3 (1/2) days
4
2 (1/4) days
5
3 (1/3) days