K can build a wall in 30 days. L can demolish that wall in 60 days. If K and L work on alternate days, when will the wall be completed ?5
2579 5b5cc6f8e4d2b4197774f081
Q: K can build a wall in 30 days. L can demolish that wall in 60 days. If K and L work on alternate days, when will the wall be completed ?
- 1120 daysfalse
- 2119 daysfalse
- 3118 daysfalse
- 4117 daystrue
- Show Answer
- Workspace
- Discuss