SOLUTION: By​ himself, a person can mow his lawn in 60 minutes. If his daughter​ helps, they can mow the lawn together in 45 minutes. How long would it take his daughter to mow t
Algebra.Com
Question 1030629: By himself, a person can mow his lawn in 60 minutes. If his daughter helps, they can mow the lawn together in 45 minutes. How long would it take his daughter to mow the lawn by herself?
Found 2 solutions by fractalier, Boreal:
Answer by fractalier(6550) (Show Source): You can put this solution on YOUR website!
The normal setup for work problems like this is:
as in 1 task, 1 lawn, 1 job...
The A and B are the times each person takes alone, the t is how long they work together...thus, plugging in the facts from the problem gives us
or
and
B = 180 minutes
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
how much each does in 1 minute
1/60 for a person
1/x for daughter
((45/60)+(45/x)) =1
multiply everything by common denominator 60x
45x+2700=60x
15x=2700
x=180 minutes
RELATED QUESTIONS
It takes a boy 60 minutes to mow the lawn, but his sister can mow it in 90 minutes. How... (answered by stanbon)
It takes a boy 90 minutes to mow the lawn, but his sister can mow it in 60 minutes. How... (answered by ptaylor)
Twin brothers, Billy and Bobby, can mow their grandparent's lawn... (answered by ikleyn)
It takes a boy 30 minutes to mow the lawn, but his sister can mow it in 20 minutes. How... (answered by solver91311)
It takes a boy 45 minutes to mow the lawn, but his sister can mow it in 90 minutes. How... (answered by jim_thompson5910)
It takes a boy 90 minutes to mow his parents lawn, but his brother can do it in 60... (answered by richwmiller)
Mowing a lawn. Adam can mow a lawn in 40 minutes,
while his cousin Victor can mow the... (answered by richwmiller)
It takes Peter 15 minutes longer than Charles to mow the lawn by himself. Together, they (answered by ankor@dixie-net.com)
Mo can mow a lawn in 4 hours. His twin brother Joe can mow the same lawn in 5 hours. How... (answered by nerdybill)