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Farm Animals!

Math brain teasers require computations to solve.

 

Puzzle ID:#20263
Fun:*** (2.75)
Difficulty:** (1.73)
Category:Math
Submitted By:eminemfreak69**
Corrected By:cnmne

 

 

 



Your objective is to buy exactly 100 farm animals with exactly 100 dollars. You must buy at least 1 of each animal. You may need some paper!

The Costs:
Cows: $10 each
Pigs: $ 3 each
Chickens: $0.50 each

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Comments

SliceOPiAus*
Jan 07, 2005

You can also just buy,

20 Pigs=$60
80 Chickens=$40
----------------------
100 animals=$100

Gizzer*
Jan 07, 2005

Usually this teaser requires that at least one of each animal is purchased.
I_am_the_Omega**
Jan 07, 2005

However, that wasn't stated. I did it the same way you did, Slice.
castanz**
Jan 07, 2005

Make it simple. I bought 10 cows.
Gizzer*
Jan 07, 2005

Then you're 90 animals short, castanz!
Shaman_Talons
Jan 07, 2005

lol duh cant only buy ten cows
verve640Aus*
Jan 07, 2005

Another possible answer is 80 chickens and 20 pigs.
AralditeAus*
Jan 08, 2005

That's what the first comment said! Duh.
i_am_sam007
Jan 23, 2005

Its easy if you want to think about it, but I didn\'t feel like it today. But it was a good teaser.
CPlusPlusMan*us*
Feb 05, 2005

9 Cows, 3 Pigs, and 2 Chickens is also an acceptable answer.
CPlusPlusMan*us*
Feb 05, 2005

Wait, no it's not. My mistake. I forgot about the "exactly 100 animals part"
eminemfreak69*
Feb 07, 2005

OK this is my teaser, and it does say you have to buy at LEAST one of each so people really need to read it and think, i bet a lot of people couldnt figure it out or it took a long time. well idk i hope you all got it!
Pat3033Aus*
Jul 19, 2007

how do i make a teaser of my own?
opqpop
Sep 11, 2010

We know

10a + 3b + 1/2c = 100
a + b + c = 100

Multiply first equation by 2 and subtract the bottom equation to get

19a + 5b = 100.

You can quickly see a = 5 and b = 1 works. Then c = 94 and you're done.

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