A can complete a piece of work in 18 days, B in 24 days and C in 36 days. If they work together, in how many days will they finish the work? MCQ with Answer and Explanation
A can complete a piece of work in 18 days, B in 24 days and C in 36 days. If they work together, in how many days will they finish the work?
A. 8 days
B. 6 days
C. 7 days
D. 9 days
Answer: Option A
Solution (By JKSSB Mock Tests)
Total work = LCM(18, 24, 36) = 72 units. Efficiency of A = 4, B = 3, C = 2. Combined efficiency = 4 + 3 + 2 = 9 units/day. Time taken together = 72 / 9 = 8 days.
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