MCQ: Twelve children take sixteen days to complete a work which can be completed by 8 adults in 12 days. After working for 3 days, sixteen adults left and six adults and four children joined them. How many days will they take to complete the remaining work ?

1. 3 days
2. 4 days
3. 6 days
4. 8 days

MCQ: A and B can do a work in 8 days, 13, and C can do the same work in 12 days. A, B and C together can finish it in 6 days. A and C together will do it in_________?

1. 4 days
2. 6 days
3. 8 days
4. 12 days

MCQ: A can do a certain work-in the same time in which B and C together can do it. If A and B together could do it in 10 days and C alone in 50 days, then B alone could do it in_________?

1. 15 days
2. 20 days
3. 25 days
4. 30 days

MCQ: A and B can complete a work in 15 days and 10 days respectively. They started doing the work together but after 2 days B had to leave and A alone completed the remaining work. The whole work was completed in___________?

1. 8 days
2. 10 days
3. 12 days
4. 15 days

MCQ: A and B can do a piece of work in 72 days; B and C can do it in 120 days; A and C can do it in 90 days. In what time can A alone do it ?

1. 80 days
2. 100 days
3. 120 days
4. 150 days

MCQ: Twenty women can do a work in sixteen days. Sixteen men can complete the same work in fifteen days. What is the ratio between the capacity of a man and a woman ?

1. 3 : 4
2. 4 : 3
3. 5 : 3
4. Data inadequate