40 men can complete a work in 40 days. they started the work together. but at the end of each 10th day, 5 men left the job. the work would have been completed in,
40 men can complete a work in 40 days. They started the work together but at the end of each 10th day, 5 men left the job. The work would have been completed in,
a. 48 days
b. 49 days
c. 50 days
d. 52 days