SOLUTION: Work problem:
Normally, it takes Jeffery 1 hour 45 minutes (105 min or 7/4 hour) to mow and trim an average lawn. When Lupe worked with him, an average lawn only took an hour. How
Algebra.Com
Question 742139: Work problem:
Normally, it takes Jeffery 1 hour 45 minutes (105 min or 7/4 hour) to mow and trim an average lawn. When Lupe worked with him, an average lawn only took an hour. How long would it take Lupe to mow and trim an average yard on her own?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Normally, it takes Jeffery 1 hour 45 minutes (105 min or 7/4 hour) to mow and trim an average lawn. When Lupe worked with him, an average lawn only took an hour. How long would it take Lupe to mow and trim an average yard on her own?
-----
Jeff time = 7/4 hr/job ; rate = (4/7) job/hr
------------------
Together time = 1 hr/job ; rate = 1 job/hr
---------------------
Lupe time = x hr/job ; rate = 1/x job/hr
-----------------
Equation:
rate + rate = together rate
4/7 + 1/x = 1
----
4x + 7 = 7x
3x = 7
x = 7/3 hrs (Lepe's time alone)
===================================
Cheers,
Stan H.
====================
RELATED QUESTIONS
if 4 people can mow a lawn in 1 hour, how many people will it take to mow the same lawn... (answered by stanbon)
It takes George 1 hour longer to mow the lawn than it takes Henry. Working together,... (answered by palanisamy)
It takes George 1 hour longer to mow the lawn than it takes Henry. Working together,... (answered by ankor@dixie-net.com)
Together, Diane and Craig can mow their lawN in 1 hour and 10 minutes. Working alone,... (answered by josgarithmetic,josh_jordan)
LeBron mows yards. For each yard he charges $5.50 for the use of his mower and $3.50 for... (answered by josgarithmetic)
Holly takes 50 minutes to mow the lawn. It takes erich an hour to mow the same lawn. One... (answered by edjones)
Mowing a lawn. Adam can mow a lawn in 40 minutes,
while his cousin Victor can mow the... (answered by richwmiller)
It takes George 1 hour longer to mow the lawn than it takes Henry. Working together,... (answered by checkley77,CharlesG2)
It takes George 1 hour longer to mow the lawn than it takes Henry. Working together,... (answered by ankor@dixie-net.com)