SOLUTION: a window washer can wash the windows on one side of a building in 112 working hours.with an assistant he can do the job in 63 hours.how many hours would the assistant need to do th

Question 548504: a window washer can wash the windows on one side of a building in 112 working hours.with an assistant he can do the job in 63 hours.how many hours would the assistant need to do the job alone
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
a window washer can wash the windows on one side of a building in 112 working hours.with an assistant he can do the job in 63 hours.how many hours would the assistant need to do the job alone
---------------------
washer rate = 1/112 job/hr
assist rate = 1/x job/hr
together rate = 1/63 job/hr
------
Equation:
rate + rate = together rate
1/112 + 1/x = 1/63
----
63x + 63*112 = 112x
-----
49x = 63*112
x = 144 hrs (time for the asst to do the job alone)
==================
Cheers,
Stan H.
RELATED QUESTIONS
A window washer can wash the windows on one side of a building in 72 working hours. With... (answered by stanbon)

Easy answers for this... how to figure it out One window washer working alone can wash (answered by ewatrrr)

Write the equation and solve by factoring: Working together, Jim and Steve can wash the... (answered by scott8148)

If a worker can wash all the glass windows of a building in 9 days, what part of the job... (answered by richwmiller)

A landscaper can prepare and seed a new lawn in 12 hours. If he works with an assistant,... (answered by josmiceli)

If a worker can wash all the glass windows of a building in 9 days, what part of the job... (answered by jim_thompson5910)

Sumi can wash windows of an office building in 3/4 the time it takes her apprentice. One... (answered by Edwin McCravy)

an apartment building has 45 windows on each side. each window is a rectangle that is... (answered by josmiceli)

A carpenter can complete a certain job in 5 hours. After working on the job for 2 hours,... (answered by edjones,AnlytcPhil,lwsshak3)