iwanttogotostanford
  • iwanttogotostanford
llll
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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iwanttogotostanford
  • iwanttogotostanford
@Cardinal_Carlo
iwanttogotostanford
  • iwanttogotostanford
do you know how?
iwanttogotostanford
  • iwanttogotostanford
@Cardinal_Carlo

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anonymous
  • anonymous
Yes. It's basically like this: \[\frac{ 1 }{ x } + \frac{ 1 }{ x + 8 } = \frac{ 1 }{ 3 }\] \[\frac{ (x + 8) + x }{ x(x + 8) } = \frac{ 1 }{ 3 }\] \[\frac{ x ^{2} + 8x }{ 2x + 8 } = 3\] \[x ^{2} + 8x = 3(2x + 8)\] \[x ^{2} + 8x = 6x + 24\] \[x ^{2} + 2x - 24 = 0\] \[(x + 6)(x - 4) = 0\] \[x = 4 ~~and ~~x = -6\] However, time cannot be negative so we only accept x = 4 which is Harry's rate of 4 hours per job. And since Jimmy is 8 hours slower, he has a rate of 12 hours per rake job. \[4 + jimmy = 8\] \[jimmy = 12\] I apologize for taking so long, had trouble with the syntax in the Equation button.
iwanttogotostanford
  • iwanttogotostanford
no, thank you so much for your help! @Cardinal_Carlo IN all realness haha how did you get to be so good at math? I just need to know because I need to get really good at it!
anonymous
  • anonymous
Always be curious, and always try to satiate that curiosity. You haven't yet the slightest clue of what you could've possibly learned.
iwanttogotostanford
  • iwanttogotostanford
@Cardinal_Carlo ok, thank you!
anonymous
  • anonymous
You're welcome ^_^
anonymous
  • anonymous
Oh, and don't forget to close this question.
iwanttogotostanford
  • iwanttogotostanford
@Cardinal_Carlo wait, would jimmy have to work 12 hours on his own then to complete th e jb right?
iwanttogotostanford
  • iwanttogotostanford
the job*
anonymous
  • anonymous
Precisely. And, Harry does it in 4 hours.
iwanttogotostanford
  • iwanttogotostanford
ok, thank you again

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