- A7 days
- B5 days
- C6 days
- D8 days
Step-by-Step Solution
60 units: A 6, B 4, C 3. Days 1–2: 20. Days 3–4: 26 (total 46). Left 14 at 7: 2. Total 6.
Answer: C) 6 days
A (10 days) and B (15 days) start a job; after 2 days C (20 days) joins; after 2 more days A leaves; B and C finish. How many days in all?
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