Quiz Discussion

A can do three times the work done by B in one day. They together finish \(\frac{2}{5}\) of the work in 9 days. The number of days by which B can do the work alone is?

• 1] 120 days
• 2] 100 days
• 3] 30 days
• 4] 90 days

Two men and women are entrusted with a task. The second man needs three hours more to cope up with the job than the second man and the woman would need working together. The first man, working alone, would need as much time as second man and the woman working together. The first man working alone, would spend eight hours less than the double period of the time second man would spend working alone. How much time would the two men and the women need to complete the task if they all asked together?

• 1] 1 hour
• 2] 2 hours
• 3] 3 hours
• 4] 4 hours
• 5] 5 hours

A and B can separately complete a piece of work in 20 days and 30 days respectively. They worked together for some time. Then B left the work. If A completed the rest of the work in 10 days, then B worked for

• 1]

  6 days

• 2]

  8 days

• 3]

  12 days

• 4]

  16 days

40 men can complete a piece of work in 15 days. 20 more men joined them after 5 days they start doing work. How many days will be required by them to finish the remaining work ?

• 1]

  \({ \text{7}}\frac{2}{3}{ \text{ days}}\)

• 2]

  \({ \text{6}}\frac{1}{5}{ \text{ days}}\)

• 3]

  \({ \text{8}}\frac{1}{4}{ \text{ days}}\)

• 4]

  \({ \text{6}}\frac{2}{3}{ \text{ days}}\)

There is a group of 5 boys and 2 girls. The two groups working together can do four times as much work as a boy and a girl. Ratio of working capacities of a boy and a girl is:

• 1] 2 : 1
• 2] 2 : 3
• 3] 1 : 3
• 4] 1 : 2

A, B and C can separately do a work in 12, 15 and 20 days respectively. They started to work together but C left after 2 days. The remaining work will be finished in = ?

• 1] 4 days
• 2] 5 days
• 3] 6 days
• 4] 15 days

A can do in one day three times the work done by B in one day. They together finish \(\frac{2}{5}\) of the work in 9 days. The number of days by which B can do the work alone is =?

• 1] 90 days
• 2] 120 days
• 3] 100 days
• 4] 30 days

A and B together can complete a particular task in 4 days. If A alone can complete the same task in 12 days. How many days will B take to complete the task if he works alone?

• 1]

  9 days

• 2]

  7 days

• 3]

  5 days

• 4]

  3 days

• 5]

  None of these

The daily wages of A and B respectively are Rs. 3.50 and Rs. 2.50. When A finishes a certain work, he gets a total wage of Rs. 63. When B does the same work, he gets a total wage Rs. 75. If both of them do it together what is cost of the work ?

• 1] Rs. 67.50
• 2] Rs. 27.50
• 3] Rs. 60.50
• 4] Rs. 70.50

42 women can do a piece of work in 18 days, How many women would be required do the same work in 21 days.

• 1] 35
• 2] 36
• 3] 37
• 4] 38