Question : A man can do a piece of work in 30 hours. If he works with his son, then the same piece of work is finished in 20 hours. If the son works alone, he can do the work in:

Option 1: 60 hours

Option 2: 50 hours

Option 3: 25 hours

Option 4: 10 hours

Question : If A and B together can do a piece of work in 20 days, and A alone can do the same work in 30 days, in how many days can B alone complete the same work?

Option 1: 45

Option 2: 40

Option 3: 60

Option 4: 50

Question : A can do a piece of work in 10 days and B can do it in 12 days. They work together for 3 days. Then B leaves and A alone continues. 2 days after that C joins and the work is completed in 2 days more. In how many days can C do it, if he works alone?

Option 1: 30 days

Option 2: 50 days

Option 3: 40 days

Option 4: 60 days

Question : A and B together can do a piece of work in 12 days, while A alone can do the same work in 30 days. B alone can do it in:

Option 1: 18 days

Option 2: 20 days

Option 3: 15 days

Option 4: 22 days

Question : If a man earns Rs. 2000 for his first 50 hours of work in a week and is then paid one and a half times his regular hourly rate for any additional hours, then the number of hours he must work to make Rs. 2300 in a week is:

Option 1: 6 hours

Option 2: 4 hours

Option 3: 7 hours

Option 4: 5 hours

Question : A can do a piece of work in 20 days and B in 30 days. They work together for 7 days and then both leave the job. Then C alone finishes the remaining work in 10 days. In how many days will C finish the full work?

Option 1: 25 days

Option 2: 30 days

Option 3: 24 days

Option 4: 20 days