1. A can do a piece of work in 4 hours; B and C can do it in 3 hours. A and C can do it in 2 hours. How long will B alone take to do it ? 10 hours 12 hours 8 hours 24 hours Answer: 12 hours Explanation: View Answer Discuss in Forum Report Question

 2. If A and B together can complete a piece of work in 15 days and B alone in 20 days, in how many days can A alone complete the work ? 60 days 45 days 40 days 30 days Answer: 60 days Explanation: View Answer Discuss in Forum Report Question

 3. A and B together can do a piece of work in 12 days, while B alone can finish it in 30 days. A alone can finish the work in ? 20 days 25 days 15 days 18 days Answer: 20 days Explanation: View Answer Discuss in Forum Report Question

 4. If A and B together can complete a work in 18 days, A and C together in 12 days and B and C together in 9 days, then B alone can do the work in ? 18 days 24 days 30 days 40 days Answer: 24 days Explanation: View Answer Discuss in Forum Report Question

 5. A and B can do a piece of work in 10 days, B and C in 15 days and C and A in 20 days. C alone can do the work in ? 60 days 120 days 80 days 30 days Answer: 120 days Explanation: View Answer Discuss in Forum Report Question

 6. 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 how many days all the three together can do the work ? 80 days 100 days 60 days 150 days Answer: 60 days Explanation: View Answer Discuss in Forum Report Question

 7. 8 men can do a work in 12 days. After 6 days of work, 4 more men were engaged to finish the work. In how many days would the remaining work be completed ? 2 3 4 5 Answer: 4 Explanation: View Answer Discuss in Forum Report Question

 8. A and B can do a piece of work in 20 days and 12 days respectively. A started the work alone and then after 4 days B joined him till the completion of the work. How long did the work last ? 10 days 20 days 15 days 6 days Answer: 10 days Explanation: View Answer Discuss in Forum Report Question

 9. 5 men can do a piece of work in 6 days while 10 women can do it in 5 days. In how many days can 5 women and 3 men do it ? 4 days 5 days 6 days 8 days Answer: 5 days Explanation: View Answer Discuss in Forum Report Question

 10. 4 men and 6 women can complete a work in 8 days, while 3 men and 7 women can complete it in 10 days. In how many days will 10 women complete it ? 50 days 45 days 40 days 35 days Answer: 40 days Explanation: View Answer Discuss in Forum Report Question