A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

help please i will reward you

  • This Question is Closed
  1. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Harry can rake the leaves in the yard 8 hours faster than his little brother Jimmy can. If they work together, they can complete the job in 3 hours. Using complete sentences, explain each step in figuring out how to determine the time it would take Jimmy to complete this job on his own.

  2. Kash_TheSmartGuy
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    what's the question?

  3. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Harry can rake the leaves in the yard 8 hours faster than his little brother Jimmy can. If they work together, they can complete the job in 3 hours. Using complete sentences, explain each step in figuring out how to determine the time it would take Jimmy to complete this job on his own.

  4. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @jim_thompson5910

  5. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    x = time it takes Jimmy to do the job alone x-8 = time it takes Harry to do the job alone (since he can do it 8 hrs faster) you can form this equation based off of the given word problem \[\Large \frac{1}{x} + \frac{1}{x-8} = \frac{1}{3}\] solve for x to get your answer

  6. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    okay so now i just have to find the common denominator and combine?

  7. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    would it take him 26 hours to do it on hs own @jim_thompson5910

  8. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @mns

  9. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    \[\Large \frac{1}{x} + \frac{1}{x-8} = \frac{1}{3}\] \[\Large 3x(x-8)*\left(\frac{1}{x} + \frac{1}{x-8}\right) = 3x(x-8)*\left(\frac{1}{3}\right)\] \[\Large 3x(x-8)*\left(\frac{1}{x}\right) + 3x(x-8)*\left(\frac{1}{x-8}\right) = 3x(x-8)*\left(\frac{1}{3}\right)\] \[\Large 3(x-8) + 3x = x(x-8)\] I'll let you take over

  10. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    In step 2, I multiply both sides of the equation by the LCD 3x(x-8) to clear out all the fractions (which are fully cleared out by step 4)

  11. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    oh sorry line 3 is cut off, it is supposed to be \[3x(x-8)*\left(\frac{1}{x}\right) + 3x(x-8)*\left(\frac{1}{x-8}\right) = 3x(x-8)*\left(\frac{1}{3}\right)\]

  12. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

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
  • 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.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.