7 chickens and 11 Rabbits - 7 X 2 (feet per chicken) plus 11 X 4 (feet per rabbit) equals 58
There are 5n chickens and 20-3n rabbits, for n = 1,2,3,4,5 or 6.
12 chickens 4 rabbits
44 chickens and 28 rabbits. Booya
Suppose there are C chickens and R rabbits. Then Feet: 2*C + 4*R = 140 . . . . . (I) Heads: C + R = 50 . . . . . . . . (II) Equation (I) - Equation (II) gives: 2*C + 4*R - 2*C - 2*R = 140 - 2*50 or 2*R = 40 so that R = 20 and then, by (II), C + 20 = 50 so that C = 30. Answer: 20 rabbits and 30 chickens. This assumes, of course, that there are no headless chickens running around!
No. Chickens have very small brains in their heads.
there are 80 goats and 20 chickens.
Here's a Perl script that will answer the problem for any number of heads and feet. sub how_many { print "Number of heads: "; chomp($h = ); print "Number of feet: ";chomp($f = ); $p = $h; $c = 0; while (($p*4 + $c*2) != $f) { $p--; $c++; } } &how_many; print "There are $p pigs and $c chickens.\n"; print "They have $h heads and $f feet.\n"; Number of heads: 27 Number of feet: 78 There are 12 pigs and 15 chickens. They have 27 heads and 78 feet.
9 sheeps and 18 chickens
Rabbits thump their feet to warn other rabbits of danger. Rabbits also sometimes thump their feet in anger or frustration.
This is not possible
12 rabbits 15 ducks
It works out that there are 49 chickens and 15 cows Heads = 49+15 = 64 Feet = 2*(49)+4*(15) = 158