A and B can do a piece of work in 18 days BNC in 24 days and a and C in 36 days Inn what time can they do the working together
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Answer:16 days is right answer
Step-by-step explanation:
According to statement we know thatA+B=18DAYs
B+C= 24 DAYS
C+A = 36 days
take LCM we get 72 LCM
that is total work is 72 units
now a and b can do 4 unit works per day
b and c can do 3 unit work per day
and c and a can do 2 unit of work per day
now add all of them we get 4+3+2 = 9
it means 2(a+b+c) can do 9 units work per day
2 is here bcoz all of them are counted 2 timesit means a+b+c = 4.5
now
total work/efficiency= time taken
72/4.5= 16 days
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