#1
Yeah, couple of (what probably are actually pretty simple) math questions im a little stumped with right now. You don't have to give me the answer, but I'm not going to hate you if you do, I just more so what to see how its set up (in a Algebra type way).

76.) You paint 2 square yards of a community mural in 3 hours and a friend paints 4 square yards in 5 hours. How long does it take the two of you to paint 11 square yards when working together?

11.) A chess tutor charges a fee for the first lesson that is 1.5 times the fee for the later lessons. You spend $315 for 10 lessons. How much does the first lesson cost? How much does the later lesson cost?

12.) You buy some calla lilies and peonies at a flower store. Calla lilies cost $3.50 each and peonies cost $5.50 each. The total cost of 12 flowers is $52. How many calla lilies and how many peonies did you buy?

Thanks for any help you can give.
#2
Dude. What grade are you in?

No one help him. He needs to learn.

EDIT: Well, maybe that's a bit harsh.

I'll set the problems up algebraically for you. Just hold up. Algebra's a pain to type.

1) This one I might be wrong on. I think the right way is 1 over how how many jobs over how long it takes to do a job (let's say one job is 2 square yards) plus how many jobs over how long it takes. I'm not sure though.

2) I can just see what the answer is. Not sure how to set it up.
Just kinda common sense I guess. EDIT: For the sake of not looking stupid, I'll just give you the answer. 45 and 30.

3) 3.5x + 5.5 y = 52 because x is the number of calla's and y is the # of peonies.
X + y = 12 You bought twelve flowers in total.
System of equations.
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Last edited by abcdboy at Sep 13, 2007,
#3
You don't have to give me the answer, but I'm not going to hate you if you do, I just more so what to see how its set up (in a Algebra type way).


Seems like he's interested in learning, to me.
#4
76.) is 880 mins....3 hours equals 180 mins, 5 hours equals 300 mins...combined they equal 480 mins...so that means they paint together 6 square yards every 480 mins...cross multiply and divide with 11 yards and you get 880 mins
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#5
the answer is as follows:

e^3 ((b*4/5*pi)/2n) i

e = 2.71828183
b = mass of brain wave synthesis
pi = 3.14
n = stupidity of not trying for yourself
i = imaginary unit
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#6
Quote by abcdboy
1) This one I might be wrong on. I think the right way is 1 over how how many jobs over how long it takes to do a job (let's say one job is 2 square yards) plus how many jobs over how long it takes. I'm not sure though.

2) I can just see what the answer is. Not sure how to set it up.
Just kinda common sense I guess. EDIT: For the sake of not looking stupid, I'll just give you the answer. 45 and 30.

3) 3.5x + 5.5 y = 52 because x is the number of calla's and y is the # of peonies.
X + y = 12 You bought twelve flowers in total.
System of equations.


I'm still pretty confused with number one, and I'm sure your answer is correct for number two, just I really need to see how its done, I'd be much better off that way. Thank you though.
#7
Quote by WyldeGibsonPlyr
I'm still pretty confused with number one, and I'm sure your answer is correct for number two, just I really need to see how its done, I'd be much better off that way. Thank you though.

10.5x = 315.

There you go.
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#8
Well since I like to help out, my interpretation of #1:
You paint 2/3hrs = 0.66.. /hr. Your friend paints 4/5hrs = 0.8/hr. In total, your team paints 1.466 .. /hr. To find how long the whole job takes: 11 / 1.466... = 7.5 hrs.
Hope this helps.
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#9
For #2:
Let x represent the standard lesson rate.
1.5x + 9x = 315
x = 30
The first lesson is 1.5x = 45.

#3 you can do yourself I suppose ...
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Burning in the hell
Everybody's gonna bring
A lot of beers and meat

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#10
Quote by WyldeGibsonPlyr
Yeah, couple of (what probably are actually pretty simple) math questions im a little stumped with right now. You don't have to give me the answer, but I'm not going to hate you if you do, I just more so what to see how its set up (in a Algebra type way).

76.) You paint 2 square yards of a community mural in 3 hours and a friend paints 4 square yards in 5 hours. How long does it take the two of you to paint 11 square yards when working together?

11.) A chess tutor charges a fee for the first lesson that is 1.5 times the fee for the later lessons. You spend $315 for 10 lessons. How much does the first lesson cost? How much does the later lesson cost?

12.) You buy some calla lilies and peonies at a flower store. Calla lilies cost $3.50 each and peonies cost $5.50 each. The total cost of 12 flowers is $52. How many calla lilies and how many peonies did you buy?

Thanks for any help you can give.



76.) (your jobs/hour) + (friend's jobs/hour) = (total jobs/x)
2/3 + 4/5 = 11/x
x = 7.5

11.) (Fee for first lesson) + 9(fee for every other lesson) = (total cost)
1.5x + 9x = 315
x = 30, so $45 for first lesson and $30 for every lesson after that

12. (cost per Calla)*(number of Callas) + (cost per Peony)*(Total Peonies) = (total cost)
(number of Peonies) = 12 - (number of callas)
3.50x + 5.50(12-x) = 52
3.50x + 66 - 5.50x = 52
14 = 2x
x = 7, so 7 callas and 5 peonies.


Hope that helps.
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#12
Quote by WyldeGibsonPlyr
Oh my gosh guys, thats wonderful!

Thank you all.


No problem. I'm going to be a math tutor this year so I guess I need the practice.
Quote by LochieW
Thats it, attackofnose wins LochieW's Official Trophy of Using His Googling Skills to the Max!


Hooray!