Two persons Aman and Bhanu can dig a pit in 20 days and 25 days respectively and a third person Cheenu can fill that pit in 50 days. All of the three persons start their work and after sometime Cheenu leaves the work. If total time taken to dig the pit from the beginning is 13 days, find after how many days Cheenu left his work?

• 8.5 days

• 7.5 days

• 9.5 days

• 8 days

Rohan takes twice the time taken by Sohan to complete a piece of work and half of the time taken by Mohan to complete the work. If all of them working together can complete the work in 12 days, in how many days Rohan and Sohan working together can complete that work?

• 12 days

• 14 days

• 21 days

• 25 days

5 Men can do a piece of work in 6 days. 6 Women can do 40% of same work in 4 days and 3 Children can do 75% of same work in 6 days. If 2 Men, 3 Women and 1 Child start work alternately, then who will be the last to complete the work?

• Men

• women

• Child

• Cannot be determined

A can do a piece of work in 18 days, B can do it in 24 days and C can do it in 60 days. Efficiency of D is twice the efficiency of C. If A worked for 2 days, B worked for 4 days and C worked for 6 days. How many days will D take to complete the remaining work alone?

• 28.666 days

• 28.75 days

• 18.666 days

• 18.75 days

A, B and C can do a piece of work in 12, 18 and 24 days, respectively. They all begin together. A work continuously till it is finished, B leaves the work 2 days before its completion and C leaves the work 4 days before its completion. In what approximate time is the work finished?

• 4 days

• 7 days

• 5 days

• 9 days

A contractor decided to complete a work in 90 days. He employed 250 men at the beginning and another 150 men after 60 days and completed the work in stipulated time. Had he not employed the additional men, what percent more time he would have taken to finish the work?

• 27%

• 30%

• 20%

• 50%

A, B and C working alone can complete a piece of work in 12, 15 and 20 days respectively.Each one does equal amount of work one by one. As soon as one’s part of work is done, the one can leave. In how many days will the work get finished?

• 13.333 days

• 12.666 days

• 15.666 days

• 17.666 days

Amar, Akbar and Anthony take up a task to finish for Rs. 876. Amar completes his assignment in 4 days, Akbar does it in 8 days and Anthony takes 12 days to finish it. They complete the work with the help of their mother Nirupama in 2 days. What does Nirupama get?

• Rs.307

• Rs.73

• Rs.75

• Rs.267

A certain piece of work done by Raghu and Rajeev separately in 4 and 5 days respectively, whereas Ranvijay ruined it in 3 days. How long will it take to the 4/5th of a work done or ruined, if all the three people start together?

• 6days

• 7days

A and B together can finish a piece of work in 10 days, B and C together do it in 12 days whereas A and C together finish it in 20 days. What is the respective ratio of the number of days taken by A when completing the same work alone to the number of days taken by C when completing the same work alone?

• 2 : 3

• 1:4

• 3:4

• None of these