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kysse
#11 Posted : Sunday, November 03, 2013 12:04:22 PM
Rank: Elder

Joined: 1/17/2013
Posts: 4,693
Location: Earth
jaggernaut wrote:
4lourBliss wrote:
in my farm, i keep chickens and goats, the total head count for both is 19 and the total number of their legs is 60. How many chickens and goats are there in farm?


Simple...

let chicken = x
and goats = y

Then just solve the equation..

x + y = 19 (based on heads)
2x + 4y = 60 (based on legs)

Thus
x=19-y

therefore
2(19-y)+4y=60
38-2y+4y=60
2y=22
y=11

Thus x=8

Therefore: chicken are 8 with 16 legs
goats are 11 with 44 legs.

Total 19 heads and 60 legs.

**unless you are including the '5th leg' of the billy goatssmile


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  | | Edit by user: Sunday, November 03, 2013 12:09 PM | Reason: Not specified
4lourBliss
#12 Posted : Sunday, November 03, 2013 12:04:51 PM
Rank: Member

Joined: 5/9/2013
Posts: 285
Location: hapakule.
washiku wrote:
jaggernaut wrote:
4lourBliss wrote:
in my farm, i keep chickens and goats, the total head count for both is 19 and the total number of their legs is 60. How many chickens and goats are there in farm?


Simple...

let chicken = x
and goats = y

Then just solve the equation..

x + y = 19 (based on heads)
2x + 4y = 60 (based on legs)

Thus
x=19-y

therefore
2(19-y)+4y=60


smile Applause Applause
38-2y+4y=60
2y=22
y=11

Thus x=8

Therefore: chicken are 8 with 16 legs
goats are 11 with 44 legs.

Total 19 heads and 60 legs.


Ditto


smile smile Applause Applause
Whatever the mind of man can conceive and believe, it can achieve.
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jaggernaut
#13 Posted : Sunday, November 03, 2013 12:08:48 PM
Rank: Elder

Joined: 10/9/2008
Posts: 5,389
4lourBliss wrote:
washiku wrote:
jaggernaut wrote:
4lourBliss wrote:
in my farm, i keep chickens and goats, the total head count for both is 19 and the total number of their legs is 60. How many chickens and goats are there in farm?


Simple...

let chicken = x
and goats = y

Then just solve the equation..

x + y = 19 (based on heads)
2x + 4y = 60 (based on legs)

Thus
x=19-y

therefore
2(19-y)+4y=60


smile Applause Applause
38-2y+4y=60
2y=22
y=11

Thus x=8

Therefore: chicken are 8 with 16 legs
goats are 11 with 44 legs.

Total 19 heads and 60 legs.


Ditto


smile smile Applause Applause

Now you can see why I scored an A in mathematics.smile smile smile
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4lourBliss
#14 Posted : Sunday, November 03, 2013 12:10:04 PM
Rank: Member

Joined: 5/9/2013
Posts: 285
Location: hapakule.
Using only addition, how do you add eight 8’s and get the number 1000?
Whatever the mind of man can conceive and believe, it can achieve.
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Njung'e
#15 Posted : Sunday, November 03, 2013 12:10:49 PM
Rank: Elder

Joined: 2/7/2007
Posts: 11,935
Location: Nairobi
[quote=jaggernaut][quote=4lourBliss][quote=washiku][quote=jaggernaut][quote=4lourBliss]


You copied from my workSad smile smile
Nothing great was ever achieved without enthusiasm.
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  | | Edit by user: Sunday, November 03, 2013 12:15 PM | Reason: Not specified
4lourBliss
#16 Posted : Sunday, November 03, 2013 12:13:28 PM
Rank: Member

Joined: 5/9/2013
Posts: 285
Location: hapakule.
Sally is 54 years old and her mother is 80, how many years ago was Sally’s mother three times her age?
Whatever the mind of man can conceive and believe, it can achieve.
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kysse
#17 Posted : Sunday, November 03, 2013 12:18:36 PM
Rank: Elder

Joined: 1/17/2013
Posts: 4,693
Location: Earth
This thread reminds me of the BODMAS one.Laughing out loudly
jagger leta jibu.
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Njung'e
#18 Posted : Sunday, November 03, 2013 12:23:11 PM
Rank: Elder

Joined: 2/7/2007
Posts: 11,935
Location: Nairobi
kysse wrote:
This thread reminds me of the BODMAS one.Laughing out loudly
jagger leta jibu.


Looks like you used to go to school on Sundays alone.smile
Nothing great was ever achieved without enthusiasm.
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Mastermind
#19 Posted : Sunday, November 03, 2013 12:24:20 PM
Rank: Veteran

Joined: 1/25/2012
Posts: 1,624
Location: Langley
4lourBliss wrote:
Using only addition, how do you add eight 8’s and get the number 1000?

888+88+8+8+8= 1000











If you have built castles in the air, your work need not be lost; that is where they should be. Now put the foundations under them.
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sumuni
#20 Posted : Sunday, November 03, 2013 12:24:49 PM
Rank: Member

Joined: 6/24/2007
Posts: 111
Location: Afrique
4lourBliss wrote:
Sally is 54 years old and her mother is 80, how many years ago was Sally’s mother three times her age?

41 years ago.
Solution;
Let the no. of years ago when sally mother's age was 3 times hers be Y
Then
3(54-Y) = (80-Y)
162-3Y = 80 - Y
Putting like terms together,
162-80 = 3Y-Y
82 = 2Y
Hence,
Y = 41
We want more!!!
It is a curious fact that of all the illusions that beset mankind, none is quite as curious as that tendency to suppose that we are mentally and morally superior to those who differ from us in opinion.
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