The number of workers and the time to complete a job is a case of direct proportion.

Which of the following are in inverse proportion? (i) The number of workers on a job and the time to complete the job. (ii) The time taken for a journey and the distance travelled in a uniform speed. (iii) Area of cultivated land and the crop harvested. (iv) The time taken for a fixed journey and the speed of the vehicle. (v) The population of a country and the area of land per person.

A,B,C,D and E are five persons to complete jobs X and Y. Line graph shows the data regarding the number of days taken by these persons to complete the job X and Y. If B worked on job Y with 4/9 times his work efficiency and assisted by D every 3^(rd) day then find the number of days for which B and D worked to complete the job.

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

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.

Prakash Jha wishes to fix-standard production for worker along with standard time to complete the job. Under which function of management, standards are fixed ?

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.

A group of workers can complete a job in 120 days. If there were 4 more such workers then the work could be finished in 12 days less what was the actual strength of workers?