Time & Work, Pipes & Cisterns: Total Work & Efficiency Method Masterclass
Ditch traditional fraction calculations. Learn the LCM Efficiency Method to solve complex alternate day and efficiency variance problems in 30 seconds.
- Assume Total Work = LCM of individual time durations.
- Efficiency = Total Work / Time Taken; Work Done = Efficiency × Time.
- Treat emptying pipes as negative efficiency values in net throughput equations.
The Power of the LCM Method
Writing 1/x + 1/y = 1/z causes fraction arithmetic errors under time pressure. Converting work problems into tangible units of work via LCM simplifies the entire problem into elementary addition and subtraction.
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