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
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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
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