SOLUTION: 8 workers can complete 2 projects in 9 days. How many workers are needed to complete 5 projects in 12 days?

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: 8 workers can complete 2 projects in 9 days. How many workers are needed to complete 5 projects in 12 days?      Log On


   

Question 420060: 8 workers can complete 2 projects in 9 days. How many workers are needed to complete 5 projects in 12 days?
Answer by sudhanshu_kmr(1152) About Me  (Show Source):
You can put this solution on YOUR website!

for one project 9*8/2 = 36 man days is needed
so, for 5 projects, 36*5 = 180 man days
180/12 = 15
so, 15 workers are needed.