1. Two persons A and B together can complete a piece of work in 9 days. B alone can do that work in 36 days. In how many days can A alone can complete that work? (3)
1) 16 days
2) 18 days
3) 12 days
4) 24 days
5) None of these
2. A and B can do a work in 20 days and 12 days respectively. They worked together on it for some time, C joins and finishes in 2 days. If C can do the total work in 10 days, how long did A and B together work? (1)
1) 6 days
2) 8 days
3) 10 days
4) 5 days
5) None of these
3. A, B and C can do a piece of work in 30days, 24 days and 40 days respectively. They started working together but C left four days before the completion of the work. In how many days was the work finished? (2)
1) 5 days
2) 11 days
3) 12 days
4) 8 days
5) None of these
4. 72 men can complete a piece of work in 48 days. In how many days can 54 men finish the same work? (4)
1) 46 days
2) 68 days
3) 32 days
4) 64 days
5) None of these
5. If 2 men and 3 boys can do a piece of work in 8 days and 3 men and 2 boys can do it in 7 days. In how many days will 5 men and 4 boys take to complete it? (1)
1) 4 days
2) 6 days
3) 7 days
4) 3 days
5) None of these