Saved Bookmarks
| 1. |
P and Q together can do a piece of work in 20 days P alone can do it in 60 days then find the time in which Q alone can do it is?1. 15 days2. 20 days3. 25 days4. 30 days |
||||||||||||
|
Answer» Correct Answer - Option 4 : 30 days Given: P + Q can do a piece of work = 20 days P alone do a piece of work = 60 days Concept used: Total work = LCM Formula used: Efficiency = Work/Time Calculation LCM = 60 (Total work)
Efficiency of Q = 3 – 1 = 2 Time taken by Q alone to complete the work = 60/2 = 30 days ∴ Time taken by Q alone to complete the work is 30 days |
|||||||||||||