![A and B can finish a piece of work in 30 days, B and C can finish it in 15 days, C and A in 10 days. Time taken by them together to do this work is?](https://www.gkseries.com/blog/wp-content/uploads/2023/07/A-and-B-can-finish-a-piece-of-work-in-30-days-B-and-C-can-finish-it-in-15-days-C-and-A-in-10-days.-Time-taken-by-them-together-to-do-this-work-is.jpg)
Question | A and B can finish a piece of work in 30 days, B and C can finish it in 15 days, C and A in 10 days. Time taken by them together to do this work is? | |
Type | multiple_choice | |
Option | 5 days | incorrect |
Option | 2(1/2) days | incorrect |
Option | 7(1/2) days | incorrect |
Option | 10 days | correct |
Solution
![](https://www.gkseries.com/blog/wp-content/uploads/2023/07/image-51.png)