SOLUTION: Five workers paint four houses in six days. Working at the same rate as these workers, how many workers are needed to paint 12 houses in three days?

Question 203558: Five workers paint four houses in six days. Working at the same rate as these workers, how many workers are needed to paint 12 houses in three days?
Found 2 solutions by promotion analysis, ankor@dixie-net.com:
Answer by promotion analysis(5) (Show Source): You can put this solution on YOUR website!
Five workers paint four houses in six days
So those five workers will paint two houses (half as many) in three days (half the time)
Within that time scale (three days) we need to paint 12 houses (ie six times as many) so we need six times as many workers
So the number of workers required is 5 X 6 = 30.
Thirty workers are required.

Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
Five workers paint four houses in six days. Working at the same rate as these
workers, how many workers are needed to paint 12 houses in three days?
:
Use Man-days (no.of men * no. of days)
:
Let x = the no. of man-days required to paint 1 house
:
x =
x =
x = 7.5 man-days per house
:
"how many workers are needed to paint 12 houses in three days?"
Let w = no. of workers
3w = 12(7.5)
3w = 90
w =
w = 30 workers to paint 12 house in 3 days.
RELATED QUESTIONS
Ten workers can paint a house in six days. Working at the same rate, how many days will... (answered by Alan3354)
Six workers can paint 4 houses in 8 days. How many additional workers are needed if the... (answered by edjones)
If 15 workers can paint a certain number of houses in 24 days, how many days will 40... (answered by fractalier)
Six workers can paint 4 houses in 8 days. ahow many additional workers are neededi if the (answered by ankor@dixie-net.com)
three workers can paint a house in 14 days. assuming that the workers work at the same... (answered by josmiceli)
If 10 workers plant out a garden in 3 days, 6 workers will complete the same planting... (answered by josgarithmetic)
If it takes five workers six hours to paint an office, how long will it take eight... (answered by Edwin McCravy)
If 15 workers can paint 18 houses in 24 days, how many days will 40 workers take to paint (answered by stanbon)
25 workers are needed to build a house in 16 days. how many days will 28 wokers working... (answered by Theo)