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Grazes
 3 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
 3 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?

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

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

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

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

Grazes
 3 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
 3 years ago
Best ResponseYou've already chosen the best response.0why is the rate 1/A ?

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

Grazes
 3 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?
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