Quiz Discussion

If m men can do a work in r days, then the number of days taken by (m + n) men to do it is :

Course Name: Quantitative Aptitude

  • 1]

    \(\frac{{{ \text{m}} + { \text{n}}}}{{{ \text{mn}}}}\)

  • 2]

    \(\frac{{{ \text{m}} + { \text{n}}}}{{{ \text{mr}}}}\)

  • 3]

    \(\frac{{{ \text{mr}}}}{{{ \text{m}} + { \text{n}}}}\)

  • 4]

    \(\frac{{{ \text{r}}\left( {{ \text{m}} + { \text{n}}} \right)}}{{{ \text{mn}}}}\)

Solution
No Solution Present Yet

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Subhash can copy 50 pages in 10 hours; Subhash and Prakash together can copy 300 pages in 40 hours. In how much time can Prakash copy 30 pages?

  • 1] 13 hour
  • 2] 12 hour
  • 3] 11 hour
  • 4] 9 hour
  • 5] 10 hour
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2
Discuss

A single person takes 10 minutes to stitch a bag. If from 10.00 a.m. to 12.30 p.m., 1245 bags are to be stitched how many persons should be employed on this job?

  • 1]

    81

  • 2]

    82

  • 3]

    83

  • 4]

    84

Solution
3
Discuss

A does 20% less work than B. If A can complete a piece of work in \({ \text{7}}\frac{1}{2}\) hours, then B can do it in?

 

  • 1] 5 hours
  • 2] 4 hours
  • 3] 6 hours
  • 4] 7 hours
Solution
4
Discuss

If 4 men and 6 women can complete a work in 8 days, while 3 men and 7 women can complete it in 10 days, then 10 women complete it in ?

  • 1] 35 days
  • 2] 50 days
  • 3] 45 days
  • 4] 40 days
Solution
5
Discuss

A is thrice as good as workman as B and therefore is able to finish a job in 60 days less than B. Working together, they can do it in:

  • 1]

    20 days

  • 2]

    22 1/2 day

  • 3]

    25 days

  • 4]

    30 days

Solution
6
Discuss

Three friends Anne, Bob and Chris work together to do a certain job. Time it takes them to do the work together to do a certain job. The it takes them to do the work together is 6 hours less than Anne would have take alone, 1 hour less than Bob would have taken alone and half the time Chris would have taken working alone text. How long did it take them to complete the job, working together ?

  • 1] 20 minutes
  • 2] 30 minutes
  • 3] 40 minutes
  • 4] 50 minutes
Solution
7
Discuss

A takes twice as much time as B or thrice as much time as C to finish a piece of work. Working together, they can finish the work in 2 days. B can do the work alone in:

  • 1]

    4 days

  • 2]

    6 days

  • 3]

    8 days

  • 4]

    12 days

Solution
8
Discuss

If two persons, with equal abilities, can do two jobs in two days then 100 persons with equal abilities can do 100 similar jobs in = ?

  • 1] 100 days
  • 2] 10 days
  • 3] 5 days
  • 4] 2 days
Solution
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Discuss

If 3 men or 9 boys can finish a piece of work in 21 days, in how many days can 5 men and 6 boys together do the same piece of work ?

  • 1] 8 days
  • 2] 12 days
  • 3] 14 days
  • 4] Cannot be determined
  • 5] None of these
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10
Discuss

A tank can be filled with water by two pipes A and B together in 36 minutes. If the pipe B was stopped after 30 minutes, the tank is filled in 40 minutes. The pipe B can alone fill the tank in:

  • 1] 45 minutes
  • 2] 60 minutes
  • 3] 75 minutes
  • 4] 90 minutes
Solution
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