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| 14 Nov 2011 10:32 PM |
| Every month, a girl gets allowance. Assume last year she had no money, and kept it up to now. Then she spends 1/2 of her money on clothes, then 1/3 of the remaining money on games, and then 1/4 of the remaining money on toys. After she bought all of that, she had $7777 left. Assuming she only gets money by allowance, how much money does she earn every month? |
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| 14 Nov 2011 10:32 PM |
| Help me please! If I get this right I can get some credit on my math grade! |
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Misheard
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| Joined: 23 Sep 2011 |
| Total Posts: 1010 |
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| 14 Nov 2011 10:35 PM |
| I'm not going to give you the answer, but try this. Add up all the fractions together first. |
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| 14 Nov 2011 10:36 PM |
I figured it out... But I need help on this math question...
If 1/2x +1/2(1/2x + 1/2(1/2x +1/2(1/2x + ... = y, then x = ? |
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Misheard
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| Joined: 23 Sep 2011 |
| Total Posts: 1010 |
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| 14 Nov 2011 10:38 PM |
| Oh come on now, just add that all up.... |
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Misheard
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| Joined: 23 Sep 2011 |
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| 14 Nov 2011 10:38 PM |
| Also, try adding 1/4+1/2+1/3 cause what you posted before is incorrect. |
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vienna456
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| Joined: 12 Sep 2010 |
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| 14 Nov 2011 10:43 PM |
| 31108/12=2592.33 is her monthly allowance |
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vienna456
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| Joined: 12 Sep 2010 |
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| 14 Nov 2011 10:45 PM |
lol heres the work
(X-.5)*2X/3*3X/4=7777 .5X*2X/3*3X/4=7777 .25X=7777 X=7777/.25 X=31108 |
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vienna456
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| 14 Nov 2011 10:46 PM |
| now do the rest of your homework yourself xD |
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tucker118
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| Joined: 26 Apr 2009 |
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| 14 Nov 2011 10:49 PM |
1/4 1/2 1/3? hmm least common denominator is 12. so 4x3= 12 1x3= 3 so 3/12. 1/2 would be 2x6 =12 1x6= 6 6/12. and 1/3 would be 3x4=12 1x4=4 so 4/12. add 3/12 6/12 and 4/12 you get 13/12. so No Solution, because that is over 100% hop that helped!
Tucker118
p.s, 900th post is next, where to put it?
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Misheard
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| Joined: 23 Sep 2011 |
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| 14 Nov 2011 10:50 PM |
@Tucker118
No, you have 1/2. Then you have 1/3 of a 1/2. Then you have 1/4 of 1/6. |
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vienna456
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| 14 Nov 2011 10:52 PM |
| OMG my answer is right.... |
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tucker118
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| Joined: 26 Apr 2009 |
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| 14 Nov 2011 10:54 PM |
| your least common denominator of all of them is 12... 1/2 = 6/12, 1/3 =4/12 and 1/4= 3/12. 6+4+3= 13 so 13/12 it's over 100% so there is no way she had 100 and some od percent of allowance, when she could only have 100% of her allowance. |
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moose1997
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| Joined: 04 Jul 2008 |
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| 14 Nov 2011 10:57 PM |
>of the remaining money >remaining money >remaining
Gappo gappo |
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Lepado12
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| Joined: 19 Sep 2009 |
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| 14 Nov 2011 10:58 PM |
| Answer:tell yo math teacha to give you an easier one |
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vienna456
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| 15 Nov 2011 12:04 AM |
@slip
My answer is right....I have no idea what tucker is talking about...he's doing the problem wrong
But I did learn what the speed of stupid is..... |
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zgirl341
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| Joined: 26 Apr 2009 |
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| 15 Nov 2011 12:05 AM |
>Help me please! If I get this right I can get some credit on my math grade! >If I get this right I can get some credit on my math grade! >credit on my math grade!
Not gonna give OT any credit?
~☺zgirl341, 티 히☺ ~™ |
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vienna456
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| 15 Nov 2011 12:08 AM |
ikr not even a thank you....yeesh
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tucker118
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| Joined: 26 Apr 2009 |
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| 15 Nov 2011 05:05 PM |
| @vienna, i'm pretty sure i'm right seeing as how i'm a 9th grader in trigonometry... |
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| 15 Nov 2011 05:07 PM |
| Umm I don't know, and I don't feel like calculating it right now... |
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vienna456
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| Joined: 12 Sep 2010 |
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| 15 Nov 2011 05:43 PM |
@tucker
the question was how much money does she earn every month?
my answer: (X-.5)*2X/3*3X/4=7777 .5X*2X/3*3X/4=7777 .25X=7777 X=7777/.25 X=31108 31108/12=2592.33 is her monthly allowance
Your answer: so No Solution, because that is over 100%
Ya I think I'm right.....And I hope you like grade 9 trigonometry cause looks like you might be repeating it XD |
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