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Will has some sweets.Dave has 3 times as many as Will whilst Debbie has 3 less than Dave. If they have 95 altogether, what is the ratio between the number of sweets that Will has to the number that Dave has to the number that Debbie has? Give your answer in its simplist form.

 Mar 18, 2016
 #1
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Dont worry, I'm trying to figure it out right now. Just wait a few minutes and I'll give you the answer in long form so you can atleast simplify it. :)

 Mar 18, 2016
 #2
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Oh gosh, this is actually surprisingly hard. Have you tried writing it out so you can visually see it? or just trialed and errored. I'm close but I haven't quite gotten it yet. My closest was Dave=14    Will=45     Debbie=35    Then I realised Debbies didn't work! Maybe you can mix around with the numbers I just gave you a bit? Good luck!

 Mar 18, 2016
 #3
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Tips: Break the worded question down to a way that you can actually understand. Figure out what you're actually trying to find. If you find most worded questions difficult look up ways to help with them or ask a teacher for some advice/help/extra work.

 Mar 18, 2016
 #4
avatar+118651 
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Debbie E      Dave  A     Will W

Will has some sweets.

 

Dave has 3 times as many as Will whilst          A=3W           (1)

Debbie has 3 less than Dave.                            E = A/3   so    A=3E     (2)

So Will and Debbie have the same number of sweets.  3 times less than Dave.    W=E

W+W+3W=95

 

Will : Dave : Debbie

 W  :     3W :    W                Divide by W

  1   :      3   :     1               

 Mar 18, 2016
 #5
avatar+118651 
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NOTE:

W+W+3W=95

5W=95

W =  19

 

Will gets 19,  Debbie gets 19 and  Dave gets  57

 Mar 18, 2016
 #6
avatar+129839 
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Call the number that Dave has, D

Then Debbie has D- 3

And Will has D/3

 

And we have that

 

[D ] + [ D - 3 ]  + [ D/3 ]  = 95      multiply through by 3

 

3D + 3D - 9 + D   =  285   simplify

 

7D  =  294    divide both sides by 7

 

D = 42   = Dave's

 

D - 3 = 42 - 3  = 39 = Debbie's

 

D/3   = 42/ 3 = 14  = Will's

 

And the ratios are

 

 

Will :  Dave :  Debbie

14  :    42    :   39

 

 

cool cool cool

 Mar 18, 2016

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