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Golf ball homework problem

  1. Oct 5, 2015 #1
    << Mentor Note -- Thread moved from the technical math forums, so no HH Template is shown >>

    Hey guys, could use some insight here...

    So this is a basic story problem:

    "I paid $22.30 for 6 new golf balls and 10 used balls. If each new ball costs $.65 more than a used ball,how much did I pay for each type of ball?"

    I assumed it was as simple as:

    10x+6(x+.65)=22.30

    But that is apparently incorrect...

    I'm banging my head against a wall... maybe the fact that I've been studying for an hour or two straight doesn't help as its psyching me out,but I feel like this is much more difficult then it should be...

    My mind is blank right now,what am I missing?
     
    Last edited by a moderator: Oct 5, 2015
  2. jcsd
  3. Oct 5, 2015 #2

    phinds

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    Why do you say it is incorrect? It looks to me like the correct equation to give the price of a used ball.
     
  4. Oct 5, 2015 #3
    Holy smokey.

    Man I need to learn how to take breaks in between studying...

    I re-did my equation and came up with the correct answer...

    Thanks anyway,haha.
     
  5. Oct 5, 2015 #4

    phinds

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    Are you saying the equation you posted originally is NOT correct? If not, why not?
     
  6. Oct 5, 2015 #5
    No, the equation was correct,as I assumed,but my mind was so fried from studying I forgot to multiply .65 by 6 when distributing...:headbang:

    Ah well,thanks again
     
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