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 ->
Customizable Word Problem Solvers
-> Evaluation
-> 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
Log On
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
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
