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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# Quiz
1
Discuss

A man undertakes to do a certain work in 150 days. He employs 200 men. He finds that only a quarter of the work is done in 50 days. The number of additional men that should be appointed so that the whole work will be finished in time is = ?

  • 1] 75
  • 2] 100
  • 3] 125
  • 4] 50
Solution
2
Discuss

A can do a piece of work in 5 days less than the time taken by B to do it. If both of them together take \({ \text{11}}\frac{1}{9}\) days, then the time taken by B alone to do the same work (in days ) is?

 

  • 1] 15 days
  • 2] 20 days
  • 3] 25 days
  • 4] 30 days
Solution
3
Discuss

12 monkeys can eat 12 bananas in 12 minutes. In how many minutes can 4 monkeys eat 4 bananas ?

  • 1] 4 minutes
  • 2] 10 minutes
  • 3] 12 minutes
  • 4] 8 minutes
Solution
4
Discuss

A and B can do a piece of work in 12 days, B and C in 8 days and C and A in 6 days. How long would B take to do the same work alone ?

  • 1] 24 days
  • 2] 32 days
  • 3] 40 days
  • 4] 48 days
Solution
5
Discuss

If 10 persons can do a job in 20 days, then 20 person with twice the efficiency can do the same job in:

  • 1] 5 days
  • 2] 40 days
  • 3] 10 days
  • 4] 20 days
Solution
6
Discuss

A can do a piece of work in 12 days and B in 24 days. If they work together, in how many days will they finish the work ?

  • 1] 20 days
  • 2] 8 days
  • 3] 12 days
  • 4] 15 days
Solution
7
Discuss

 

A and B together can complete a task in 20 days. B and C together can complete the same task in 30 days. A and C together can complete the same task in 40 days. What is the respective ratio of the number of days taken by A when completing the same task alone to the number of days taken by C when completing the same task alone?

  • 1]

    2:5

  • 2]

    2:7

  • 3]

    3:7

  • 4]

    1:5

Solution
8
Discuss

A and B together can do a job in 2 days; B and C can do it in 4 days; A and C in \({ \text{2}}\frac{2}{5}\) days. The number of days required for A to do the job alone is = ?

 

  • 1] 1
  • 2] 3
  • 3] 6
  • 4] 12
Solution
9
Discuss

A can do a work in 15 days and B in 20 days. If they together work on it for 4 days, what fraction of the work will be left ? 

  • 1]

    1/13

  • 2]

    6/11

  • 3]

    9/17

  • 4]

    8/15

Solution
10
Discuss

A can finish a work in 18 days and B can do the same work in 15 days. B worked for 10 days and left the job. In how many days, A alone can finish the remaining work?

  • 1]

    5

  • 2]

    5 1/2

  • 3]

    6

  • 4]

    8

Solution
# Quiz