SOLUTION: 10 person want to finish a project in 60 days , after 10 days the company told them that they must finish this project in 20 days less , how many workers they need to do that proje

Algebra ->  Rate-of-work-word-problems -> SOLUTION: 10 person want to finish a project in 60 days , after 10 days the company told them that they must finish this project in 20 days less , how many workers they need to do that proje      Log On


   

Question 1143500: 10 person want to finish a project in 60 days , after 10 days the company told them that they must finish this project in 20 days less , how many workers they need to do that project ?
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
r, rate of 1 worker
n, how many more workers
RT=J to relate amount of job J to rate R and time T

10%2Ar%2A60=10%2Ar%2A10%2B%28n%2B10%29r%2A40
r cancels.
Solve for n.