Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
Grazes
Group Title
A worker can build a fence in 8 hours, With the help of an assistant, the fence can be built in 5 hours. How long should it take the assistant, working alone, to build the fence?
 one year ago
 one year ago
Grazes Group Title
A worker can build a fence in 8 hours, With the help of an assistant, the fence can be built in 5 hours. How long should it take the assistant, working alone, to build the fence?
 one year ago
 one year ago

This Question is Closed

Lily_980 Group TitleBest ResponseYou've already chosen the best response.0
Wouldn't it be the same amount of hours?
 one year ago

JamesWolf Group TitleBest ResponseYou've already chosen the best response.0
What was wrong with my previous answer?
 one year ago

JamesWolf Group TitleBest ResponseYou've already chosen the best response.0
9 hours.
 one year ago

Grazes Group TitleBest ResponseYou've already chosen the best response.0
Not necessarily. And could you please show some work?
 one year ago

JamesWolf Group TitleBest ResponseYou've already chosen the best response.0
well lets say the assistant worked at the same rate as the worker. then it would take half the time, 4 hours right.
 one year ago

Grazes Group TitleBest ResponseYou've already chosen the best response.0
Oh. Nevermind. The answer is 40/3 hours.
 one year ago

JamesWolf Group TitleBest ResponseYou've already chosen the best response.0
13 hours? how?
 one year ago

Grazes Group TitleBest ResponseYou've already chosen the best response.0
Worker=W Assistant=A 1/A+1/W=1/5 1/A+1/8=1/5 8+A/8A=1/5 5*(8+A)=8A 40+5A=8A 3A=40 A=40/3 hours
 one year ago

JamesWolf Group TitleBest ResponseYou've already chosen the best response.0
are you sure?
 one year ago

JamesWolf Group TitleBest ResponseYou've already chosen the best response.0
why 1/A ?
 one year ago

Grazes Group TitleBest ResponseYou've already chosen the best response.0
It's the work rate.
 one year ago

JamesWolf Group TitleBest ResponseYou've already chosen the best response.0
why is the rate 1/A ?
 one year ago

JamesWolf Group TitleBest ResponseYou've already chosen the best response.0
sorry, i dont get it
 one year ago

Grazes Group TitleBest ResponseYou've already chosen the best response.0
So it takes you 6 minutes to shower, right?
 one year ago

Grazes Group TitleBest ResponseYou've already chosen the best response.0
You've showered for 2 minutes already. Doesn't that mean that you showered for 2/6 of the regular shower time or 1/3?
 one year ago

Grazes Group TitleBest ResponseYou've already chosen the best response.0
http://www.purplemath.com/modules/workprob.htm
 one year ago

JamesWolf Group TitleBest ResponseYou've already chosen the best response.0
That makes sense.
 one year ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.