... alone,

**John**can do the job in**5**hrs, and Peter in**4**hrs. =>**John**can do**1**/**5**of the work in**1**hour and Peter can do**1**/**4**of the work in one hour...5 Answers · Science & Mathematics · 17/04/2007

P + J + R =

**1**P = (**4**/**5**)J P = 4J /**5**J = (**1**/3)R J = R...4 Answers · Science & Mathematics · 12/02/2012

**John**can do**1**/**4**of the job in one day. Mary can do**1**/3 of the job in one day...such that it completes the complete job. So x = 12/7 =**1 5**/7 (**1**/**4**+**1**/3)(**1 5**/7) =**1**So it will take**1 5**/7 ...1 Answers · Science & Mathematics · 17/10/2009

... only real solution is x = approximately -3.012148. -

**John**Edit: If you're referring to..., all Newton's Method will do is give you an approximation, too. And you'...2 Answers · Science & Mathematics · 09/06/2008

...an hour. In x hours, Sally

**does**x/**4**of the work, and**John does**x/6 of the work. x/**4**+ x/6 =**1**house in x hours 3x/12 + 2x/12 = 12/12 5x = 12 x = 12/**5**= 2 2/**5**hours**1**/ 5th of an hour is 60/**5**= 12 minutes...4 Answers · Science & Mathematics · 17/05/2011

... of j from equation

**1**, so substitute that expression...equation 2 and solve: j/**5**+**5**= (j +**5**) /**4**j/**5**+**5**= j/**4**+**5**/**4**... that we have**john**'s age, we can find...15, he is 75.**Does**this make sense now?**Does**...6 Answers · Science & Mathematics · 19/03/2013

... is

**5**km more than**1**/**4**of the distance**John**traveled C/**4**=**5**+ J/**4**Multiple all of...other equation: C + J = 1280**Does**650 + 630 = 1280? Yes it**does**...1 Answers · Science & Mathematics · 17/03/2011

If you want the answer as fraction or rational number and not the decimal the answer is

**5*****1**\**4**=**5**\**1*****1**\**4**=**5**\**4**=== Or just use a calculator to find the decimal representation of**5**\**4**...4 Answers · Science & Mathematics · 14/12/2011

If

**John does**it in 6 hours, he can complete**1**/6 of the job in one hour. Silvester can do**1**/**4**of the job in an hour. ...**1**/**4**+**1**/6) =**1**.**1**/**4**+**1**/6 =**5**/12. t(**5**/12) =**1**. t = 12/**5**...5 Answers · Science & Mathematics · 14/03/2008

**John**can dig a hole in**4**hours, so he can dig**1**/**4**in one hour Frank can dig the same size hole in**5**hours. so he can dig**1**/**5**...**1**/6 in one hour Mary can do the same in 7 hours so she...1 Answers · Science & Mathematics · 19/12/2010