Latest TCS Aptitude Question SOLUTION: A can do work in 36 days. B can do the work in 72 days and c can do work in 78 days. the three take turns working.i.e A works on the 1st day. B works on the 2nd day, C on the 3rd d

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(#M40002501) TCS question Keep an EYE

A can do work in 36 days. B can do the work in 72 days and c can do work in 78 days. the three take turns working.i.e A works on the 1st day. B works on the 2nd day, C on the 3rd day and so on. which day will they finish the work?
1) 55th day
2) 54th day
3) 17th day
4) 19th day

Asked In TCS maheswari (12 years ago)

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ankit guta  (12 years ago)

[1/36+1/72+1/78]=3 days work by a,b,c
so total=55

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Akash Sharma  (12 years ago)

work of A in one day = 1/36
work of B in one day = 1/72
work of C in one day = 1/78
so total work of A& B &C in 3 day = 1/36+1/72 + 1/78
= (78 + 39 + 36)/2808
= 153/2808
so total wok will finish in =3 x2808/153 days
= 55th day------ans

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vishal sharma  (12 years ago)

55th day is the right answer
...total work in 3 days = (1/36 + 1/72 + 1/78) now
let divide 54 in three parts means each get 18 days ..
in 18 days A do 1/2 work ,
in 18 days B do 1/4 work ,
in 18 days C do 18/78 work..
so total work done on ending of 54 day will be (1/2+1/4+18/78)= 0.98 ...
so on 55th day when there is a turn of A whole work finished...

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Harsh Gupta  (12 years ago)

in one day A work === 1/36
in one day B work ===1/72
in one day C worrk ===1/78
in 6/36 + 6/72 + 6/78 ==1/12 + 1/12 + 1/13 == 51 /156 in 18 day
for doing full work == 18 * 156/51 == 54

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Shashank Kapoor  (9 years ago)

[1/36+1/72+1/78]=3 days work by a,b,c
18.35*3=55.05
so 55 is the answer

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