MCQOPTIONS
Saved Bookmarks
| 1. |
Pipe A can fill a tank in 10 min and pipe B can empty it in 15 min. If both the pipes are opened in an empty tank, the time taken to make it full is |
| A. | 25 min |
| B. | None of these |
| C. | 20 min |
| D. | 30 min |
| Answer» E. | |