Question :
Option 1: 10 days
Option 2:
Option 3: 8 days
Option 4:
Correct Answer: 8 days
Solution :
= 100% = 30 days
= 100% = 20 days
= 100% = 24 days
Total work = Time × Efficiency
Total work = LCM(30, 20, 24) = 120 units
Efficiency of
Efficiency of
Efficiency of
Total of efficiency = 4 + 6 + 5 = 15
All of them working together finish the work =
Hence, the correct answer is 8 days.
