If A finishes work in 4 days, and B in 6 days, total work units = ?
Correct answer: C. 36
- A. 12
- B. 24
- C. 36
- D. 48
Explanation
The correct answer is 36. First, calculate the least common multiple (LCM) of the time taken by A and B, which is 12. Since A and B can work together at their individual rates, multiply the LCM by a factor that allows for comparing their work rates over a common period. This gives you the total number of work units as 36. Options 12 and 24 are incorrect because they do not reflect the complete cycle of work done by both. Option 48 is incorrect because it is unnecessarily large for the least common multiple required for this calculation.
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