Five people can develop one software application in 13 days. If 2 people are suspended after the 4th day, how many total days will it take to complete the software application?
13 - 4 == 9 days' work left
3/5 of the work force left
9 / ( 3/5) ==9 x 5/3 ==45 / 3 ==15 days to finish the software application.
OR:
[5 x 13] / 3 ==21 2/3 days to finish the 13-day job.
21 2/3 x 9/13 [work left] ==15 days to finish the job.
