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Scarecrow

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16 Aug 2009 10:15pm
Brain Quiz

There is 3 questions..

Each question is worth 15 pts each

Please message me with your answers.
Any post here will be ignored.

I will post the answers and the winners in this thread

Good Luck


1) There are several chickens and rabbits in a cage (with no other types of animals). There are 72 heads and 200 feet inside the cage. How many chickens are there, and how many rabbits?

2) On a man's tombstone, it is said that one sixth of his life was spent in childhood and one twelfth as a teenager. One seventh of his life passed between the time he became an adult and the time he married; five years later, his son was born. Alas, the son died four years before he did. He lived to be twice as old as his son did. How old did the man live to be?

3) A man has $1.15 in six coins. He can't make change for a dollar, a half dollar, a quarter, a dime, or a nickel. What coins did he have?

:up :p

422

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16 Aug 2009 10:17pm
:up

--Patrick Bateman--

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16 Aug 2009 10:20pm
x= chickens
y= rabbits

x+y=72
2x + 4y = 200

Confusion Bunny

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16 Aug 2009 10:23pm
44 chickens and 28 rabbits

Confusion Bunny

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16 Aug 2009 10:24pm
2) 84 years old

Johnw

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16 Aug 2009 10:24pm
damn you fox

Confusion Bunny

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16 Aug 2009 10:25pm
3) 1/2 dollar, quarter & four dimes.


Scarecrow

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16 Aug 2009 10:26pm
whooo we have got some smart ppl here.. here is the answers :up

Answers:

1) answer
Let c be the number of chickens, and r be the number of rabbits.

r + c = 72 4r + 2c = 200 To solve the equations, we multiply the first by two, then subtract the second.

2r + 2c = 144 2r = 56 r = 28 c = 44 So there are 44 chickens and 28 rabbits in the cage.


2)Let x be the age of the man at the time of his death. His age consists of the number of years he spent as a child plus the number of years he spent as a teenager plus the number of years between his coming of age and his marriage plus five plus his son's age (half his own) plus four. In mathematical terms, this is:

x = x/6 + x/12 + x/7 + 5 + x/2 + 4 x = 14x/84 + 7x/84 + 12x/84 + 42x/84 + 9 x = 75x/84 + 9 84x/84 - 75x/84 = 9 9x/84 = 9 x/84 = 1 x = 84 So the man lived to be 84 years old.

Alternate Solution #2

The man lived 1/12 of his life as a teenager. There are seven teen years. 7 × 12 = 84.

3) A half dollar, a quarter, and four dimes.
The winners are as posted:
userbar
userbar

Their pts will be sent shortly... Thank you everyone that played I'm sorry if I haven't responded to any one yet...



[NCW] napo

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16 Aug 2009 11:43pm
:down :down :down :down :down i not see that yah have winners...dam :down :down :-z :-z

R T Leon

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17 Aug 2009 07:01am
wtf u carg

Goo Bunny

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18 Aug 2009 12:40am
wtf are dimes and nickles

please do a english one :up

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