A community for students.
Here's the question you clicked on:
 0 viewing
Grazes
 2 years ago
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?
Grazes
 2 years ago
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?

This Question is Closed

Lily_980
 2 years ago
Best ResponseYou've already chosen the best response.0Wouldn't it be the same amount of hours?

JamesWolf
 2 years ago
Best ResponseYou've already chosen the best response.0What was wrong with my previous answer?

Grazes
 2 years ago
Best ResponseYou've already chosen the best response.0Not necessarily. And could you please show some work?

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

Grazes
 2 years ago
Best ResponseYou've already chosen the best response.0Oh. Nevermind. The answer is 40/3 hours.

Grazes
 2 years ago
Best ResponseYou've already chosen the best response.0Worker=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

JamesWolf
 2 years ago
Best ResponseYou've already chosen the best response.0why is the rate 1/A ?

Grazes
 2 years ago
Best ResponseYou've already chosen the best response.0So it takes you 6 minutes to shower, right?

Grazes
 2 years ago
Best ResponseYou've already chosen the best response.0You've showered for 2 minutes already. Doesn't that mean that you showered for 2/6 of the regular shower time or 1/3?
Ask your own question
Sign UpFind more explanations on OpenStudy
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.