SOLUTION: What is the answer in a linear equation problem like this: If i can do a job in 4 hour and we can do the same job in 2 hour, how long can you do the job alone?

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Question 633418: What is the answer in a linear equation problem like this: If i can do a job in 4 hour and we can do the same job in 2 hour, how long can you do the job alone?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

i can do a job in 4 hour and we can do the same job in 2 hour

how long  highlight%28x%29can you do the job alone?

Question states***PER hour Key

 1/4 + 1/x = 1/2    |Multiplying thru by 4x so as all denominators = 1

  x + 4 = 2x

      4hr = x



and...

 1%2F4+%2B+1%2F4+=+1%2F2