Problema Solution
Thirty workers complete a project in 20 days. For the project to be completed in 10 days, how many additional workers are needed if each new worker is only half as productive as the original group?
Answer provided by our tutors
To complete the job in 10 days you need 60 good workers.
You have 30 good workers so you need an extra 30 good workers.
That's equivalent to an extra 60 poor workers.
Answer: 60.
It takes 20 days to complete a project by 30 workers .
So, it'll take 10 days to complete a project by
(30*20)/10 = 60 workers .
So, additonal workers needed = (60 - 30) = 30 .
But each new workers is half as productive as the original group .
So, (30*2) = 60 additional workers needed ................[Answer]