a and b works in 72 days b and c works in 120 days a and c
works in 90 days so a alone works in how many days



a and b works in 72 days b and c works in 120 days a and c works in 90 days so a alone works in ho..

Answer / arpit panwar

(a+b)+(b+c)+(c+a) = 1/72 + 1/120 + 1/90
2(a+b+c) = 1/30
a+b+c = 1/60
a = (a+b+c)-(b+c) = 1/60-1/120
= 1/120

ans = 120 days

Is This Answer Correct ?    2 Yes 2 No

Post New Answer

More GATE Interview Questions

What are the most asked questions for learner operators in the interview for eskom?

0 Answers   Eskom,


The horse has played a little known but very important role in the field of medicine. Horses were injected with toxins of diseases until their blood built up immunities. Then a serum was made from their blood.Serums to fight with diphtheria and tetanus were developed this way. It can be inferred from the passage, that horses were (A) given immunity to diseases (B) generally quite immune to diseases (C) given medicines to fight toxins (D) given diphtheria and tetanus serums

0 Answers   GATE,


why dogs are favourite pets?

0 Answers  


how the use of power factor correction will rsult in monthly tariff saving?

2 Answers   SNI, TCS,


Sir,i'm doing Engg. from MECHANICAL branch. now i'm in 3rd year and i want to do the preparation of GATE.sir please tell me i should refers which book and notes.and from which subject i should start my preparion.

0 Answers  






to whom is sania mirza married to?

6 Answers  


a guy hired 5 men to work on a project and they completed the job in 13 days. IF, on the 4th day, 2 men resigned, then how long would they complete the job?

1 Answers   IBM,


what is inflationWhat is Inflation? How can we calucalate inflation? and what is the present rate of Inflation?

1 Answers  


I want to know the exact syllabus for gate in electrical engineering and minimum marks to be secured

0 Answers  


used of viscocity in petrolium

0 Answers   ONGC,


A 100mA HAS ACCURACY OF +-2%.ITS ACCURACY WHILE READING 100mA?

0 Answers   BSNL,


hello can anyone send me the syllabus for isro entrance examination for the post of ISRO - scientist (SC) computer science and engineering.if u know pls inform me to this id muthumari.bharathi@gmail.com

1 Answers   ISRO,


Categories