SOLUTION: Ten workers could do the job in 12 days. If 8 workers worked for 5 days and then half of them quit, how long would it take for the rest to complete the job?
Algebra ->
Formulas
-> SOLUTION: Ten workers could do the job in 12 days. If 8 workers worked for 5 days and then half of them quit, how long would it take for the rest to complete the job?
Log On
Question 66858This question is from textbook Advanced mathematics
: Ten workers could do the job in 12 days. If 8 workers worked for 5 days and then half of them quit, how long would it take for the rest to complete the job? This question is from textbook Advanced mathematics
You can put this solution on YOUR website! Ten workers could do the job in 12 days.
This means the job requires 10*12 = 120 man/days to complete
:
If 8 workers worked for 5 days and then half of them quit, how long would it take for the rest to complete the job?
:
I understand this to mean how many more days will be required after half of them quit. Let x = number of more days required:
:
original group + half the group = 120 man/days
(8*5) + 4x = 120
40 + 4x = 120
4x = 120 - 40
4x = 80
x = 20 days to complete the job:
:
Check: (8*5) + (4*20) = 120 man/days
