A is twice as good a workman as B. If they work together, they can complete a job in 18 days. If A alone does the job, in how many days he will complete the job? `40\ d a y s` b. `27\ d a y s` c. `36\ d a y s` d. `4\ d a y s`

X can complete a job in 12 days. If X and Y work together, they can complete the job in 6 days. Y alone can complete the job in

X can complete a job in 12 days. If X and Y work together, they can complete the job in 6(2/3) days. 'Y' alone can complete the job on

A is twice as good a workman as B and together they finish a piece of work in 18 days. In how many days will A alone finish the work?

A can do a job in 12 days and B can do the same job in 6 days, in how many days working together they can complete the job?

A and B working together can complete a job in 30 days. The ratio of their efficiencies is 3 : 2. In how many days can the faster person complete the job?

A and B together can complete a work in 12 days. A alone can complete it in 20 days. If B does the work only for half a day daily, then in how many days A and B together will complete the work? 110 d a y s b. 11 d a y s c. 15 d a y s d. 20 d a y s

To do a piece of work, B takes 3 times as long as A and C together and C twice as long as A and B together. If A, B and C together can complete the works in 10 days, how long would A take alone to complete it? 24 d a y s b. 30 d a y s c. 36 d a y s d. 40 d a y s

A team of workers was employed by a contractor who undertook to finish 360 pieces of an article in a certain number of days. Making four more pieces per day than was planned, they could complete the job a day ahead of schedule. How many days did they take to complete the job? 8 d a y s b. 12 d a y s c. 9 d a y s d. 10 d a y s