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CBSE Class 10 Answered

A and B can finish a piece of work in 30 days, B and C in 40 days while C and A in 60 days. A, B, C together will finish the work in how many days?
Asked by rhinithaa | 31 Jul, 2010, 03:42: PM
answered-by-expert Expert Answer
Dear Student,
 
 
(A + B)'s one day's work = 1/30
(B + C)'s one day's work = 1/40
(C + A)'s one day's work = 1/60
 
Adding we get
 
2(A + B + C)'s one day's work =
 
 
(A + B + C)'s one day's work = 3/80
 
So together A, B and C can do the work in 80/3 days
 
 
Regards,
 
Team Topper Learning
 
Answered by | 31 Jul, 2010, 07:18: PM

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