Correct option is B
Let the total work be LCM of 10, 15 and 25 = 150 unit
Efficiency of A = unit per day
Efficiency of B = unit per day
Efficiency of C = unit per day
Total time taken by all of them = = 4 days
A. B and C can complete a work in 10, 15 and 25 days, respectively. The time taken by A. B and C together to do the work is:
Let the total work be LCM of 10, 15 and 25 = 150 unit
Efficiency of A = unit per day
Efficiency of B = unit per day
Efficiency of C = unit per day
Total time taken by all of them = = 4 days
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