A and B together can complete a piece of work in 72 days, B and C together can complete it in 120 days, and A and C together in 90 days. In what time can A alone complete the work?
A. 150 days
B. 80 days
C. 100 days
D. 120 dyas
Answers
Answered by
0
Answer: 120 days
Step-by-step explanation:
2 (1/A+1/B+1/C)
2 (1/72+1/120+1/90)
= 1/15 days
So, A+B+C can do the work in 15 days
Hence, 1/A+1/B+1/C = 1/15
1/A+1/120 = 1/15
A = 120 days
Answered by
13
ANS..120 days
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