Q. A and B together do a job in 15 days and A alone could do the same job in 20 days. How many days would B take to do half the job if he worked alone?
A) 30
B) 60
C) 40
D) 45
✔ Correct Answer: 30
Exam Insight
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A) 30
B) 60
C) 40
D) 45
✔ Correct Answer: 30
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