A, B, and C can complete a work in 10, 12, and 15 days respectively. If they all work together, how long will they take to finish the work? MCQ with Answer and Explanation
A, B, and C can complete a work in 10, 12, and 15 days respectively. If they all work together, how long will they take to finish the work?
A. 6 days
B. 5 days
C. 4 days
D. 3 days
Answer: Option C
Solution (By JKSSB Mock Tests)
Total work (LCM of 10, 12, 15) = 60 units. Efficiencies: A = 6, B = 5, C = 4. Total combined efficiency = 6 + 5 + 4 = 15 units/day. Time taken = 60 / 15 = 4 days.
No comments yet. Be the first to start the discussion!