|
Question 576037: An application of a rational function is T = (AB)/(A+B), which gives the time, T, it takes for two workers to complete a particular task where A & B represent the time it would take for each individual worker to complete the identical task working alone. It takes William 3 hours longer than Timothy to paint a 4x 5 feet bedroom. Respond to the following:
1.Working together, both can complete the job in 2 hours. How long does it take each one to complete the painting job working alone?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! An application of a rational function is T = (AB)/(A+B), which gives the time, T, it takes for two workers to complete a particular task where A & B represent the time it would take for each individual worker to complete the identical task working alone. It takes William 3 hours longer than Timothy to paint a 4x 5 feet bedroom. Respond to the following:
1.Working together, both can complete the job in 2 hours. How long does it take each one to complete the painting job working alone?
------
T = (AB)/(A+B)
2 = (A(A+3))/(A + A+3)
----
2 = (A^2+3A)/(2A+3)
----
A^2 + 3A = 4A+6
A^2 -A -6 = 0
(A-3)(A+2) = 0
Usable solution:
A = 3 hrs (Timothy's time to do the job)
A+3 = 6 hrs (William's time to do the job)
==============================================
Cheers,
Stan H.
==============
|
|
|
| |
