Question 13
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A can do a job in 20 days and B in 30 days. They work together for 5 days, and A finishes the rest alone. How long does A take for the rest?
- A 15 days
- B 12 days
- C 7 days
- D 11 2/3 days Correct
Correct Answer: Option D
Job = 60 units; A = 3, B = 2 a day
5 days together = 25 units → 35 left
A takes 35 ÷ 3 = 11⅔ days
Answer: 11⅔ days
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