Subject Category > Mathematics
Q. A and B can do a piece of work in 72 days. B and C can do it in 120 days and A and C can do it in 90 days. A alone can do it in:
A) 130 days
B) 120 days
C) 100 days
D) 150 days
✔ 120 days
Additional Information > Exam point of View
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