If A and B work together to complete a work in X days, B and C in Y days, and A and C in Z days, then
i. A, B, and C can together complete the work in
=[]daysii. A alone can finish the work in
=[]daysiii. B alone can finish the work in
=[]daysiv. C alone can finish the work in
=[]daysSo, as per our question, B should be able to complete the whole work alone in:
=[]daysPutting the values X = 45, Y= 60 and Z= 75,
[2×45×60×75 |
−2700+4500+3375 |
] = 78.26 days