There are 25 workers in a group. Each can do 1 unit/day. They stary a job of 330 units . After each day, a worker of the same efficieny as each worker in the group joins the group. The job was completed in x . Find x

There are 15 workers in groups in .Each can do 1 units per day. All the workers started a job of 220 units. After each day, a worker who can do 1unit per day joined the group. Find the taken to days

A man starts a job, working at the rate of 1 unit a day. After each day, another man joins the working group. The man who joins on the xth day of the job works until the job is completed, at x units per day.The job is completed in 4 days. The time the man who started the work would have taken to complete the job alone is (in days) :

A worker has to complete a job of 175 units. On each day starting from the second, he does 75% of the part of the job he did on the previous day. Find the number of days in which the job is completed if he did 36 units of work on the 3rd day.

Theere are 5 men in group. Each man can complete a job in 35 days. One of them starts it . Starting from the second day, a man joins until the 5th day. Therefore, all the men work together. Find the total time taken to complete the job. ( in days)

If 30 men can do a job in 30 days, find what part of the job can be completed by 1 man in 1 day.

Two workers A and B working together completed a job in 5 days. If A worked twice as efficiently as he actually did and B worked 1/3 as efficiently as he actually did, the work would have completed in 3 days. Fine the time for A to complete the job alone.

The mean income of a group of workers is bar(x) and that of another group is bar(y) . If the number of workers in the second group is 10 times the number of workers in the first group, then the mean income of the combined group is :