Time and Work

A man starts a work and one more man is added from the 2^nd day regularly. If the work is finished in 30 days, then find how many days would be required to complete the same work with 1 man working regularly?

A, B & C can complete a piece of work in 24, 6 & 12 days respectively, working together they will complete the same work in

A man can do a piece of work in 5 days, but with the help of his son, he can do it in 3 days. In what time can the son do the same piece of work alone?

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

A team of 24 men is supposed to do a job in 36 days. After 28 days, some more men are employed and work was finished 4 days earlier. Then how many more men were employed ?

If 15 men and 21 boys can do a piece of work in 6 days, 18 men and 24 boys can do it in 4 days, then the ratio of daily work done by a man to that of a boy is

P is 20% more efficient than Q. P can complete a work in 24 days. If P and Q work together, how much time will it take to complete the same work?

Daily wage of a man is 1.5 times that of a woman. How many men should work for 20 days to earn Rs. 14700 if the wages for 30 women for 20 days are Rs. 21000?

P and Q can complete a work in 15 days and 10 days, respectively. P alone started the work and Q joined him after 3 days till the completion of the work. How long did the work last?

A alone can do a piece of work in 5 days and B alone in 7 days. A and B have to do it for Rs. 3500, but they want to finish this work as soon as possible. They finish this work with the help of C in 2 days. How much money is to be paid to C?

A is thrice as good a workman as B and together they finish a piece of work in 21 days. In how many days will B alone finish the work?

A can do a job in 30 days and B can do the same job in 25 days. If they work together for 5 days on this job, what fraction of the job is completed?

It takes 7 men 12 days to complete a job. They worked for 5 days. After 5 days, 2 men left the job. In how many days will 5 men complete the job?

A is 3/4 times as good a workman as B and therefore, he is able to finish a job in 45 days less than B. if they work together, then how many days will they take to finish the work?