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December 25, 2014

December 25, 2014

Posted by **jacob** on Friday, March 15, 2013 at 10:53am.

- algebra -
**Reiny**, Friday, March 15, 2013 at 11:00amnumber of chickens --- x

number of cattle ---- y

x+y = 40

2x + 4y = 140 or x+2y = 70

subtract them

y = 30

then x = 10

The farmer has 10 chickens and 30 cattle

check:

10+30 = 40 heads

20 chicken feet + 120 cattle feet = 140 feet

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