Farmer Bob has pigs and chickens. He has 37 animals, and there are 124 legs among them altogether. How many chickens does Bob have?

Question

bibby · Answer

piggies have 4 legs
chickies have 2 legs
37 = 4p + 2c
124 = p + c

anonymous · Answer

do i use elimination with both of those equations?

bibby · Answer

You could. I'm using substitution right now

anonymous · Answer

what are you getting?

bibby · Answer

I'm not sure this is right. I'm getting 459/2 for c. I'm probably doing something wrong.
Can you post your work for elimination?

bibby · Answer

Hopefully our new friends can help

cwrw238 · Answer

one equation should be

p + c = 37

bibby · Answer

rofl god dammit

bibby · Answer

looks like I mixed up my equations.

cwrw238 · Answer

lol you got the legs mixed up with the animals

cwrw238 · Answer

yea

anonymous · Answer

haha thank you!

cwrw238 · Answer

2c + 2p = 74
2c + 4p = 124

subtracting 
2p = 50

etc….

bibby · Answer

anyhow,
124 = 4p + 2c
37 = p + c

c = 37 - p
2c = 74 - 2p

124 = 4p + 2c
124 = 2p + 74
50 =  2p
p = 25

anonymous · Answer

so there are 12 chickens and 25 pigs. got it. Thanks for the help!

the_fizicx99 · Answer

Lolll I hate these >.< I do them with random numbers

bibby · Answer

That's stupid lol. They give you the information you need

the_fizicx99 · Answer

._. Nope, I have my method, much easier what you just did

the_fizicx99 · Answer

Ofc, within the 37 animal limit