Mathematics
NULL
Medium
Question
A and B take 6 days, B and C 12 days, A and C 8 days. How long do A, B and C take working together?
A
4(2/3) days
B
4 days
C
5(1/3) days
✓ Official correct answer
D
1(1/3) days
Community credibility
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A
4(2/3) days
No member explanations yet for this option.
B
4 days
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C
5(1/3) days
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D
1(1/3) days
No member explanations yet for this option.
Explanation
A+B+C = (1/6 + 1/12 + 1/8)/2 = 3/16 per day ⇒ time = 16/3 = 5(1/3) days.