C+P=26
2C+4P=70
Therefore C=26-P
Therefore 2(26-P)+4P=70
Therefore 52-2P+4P=70
Therefore 52+2P=70
Therefore 2P=18
Therefore P=9
Therefore C+9=26
Therefore C=17
There are 17 chickens.
100000000000000
10
10 chickens
10
Let c represent the number of chickens and p represent the number of pigs.Since chickens and pigs have one head each, 70 heads = c + p.Since chickens have 2 legs and pigs have 4 legs, 200 legs = 2c + 4p.Subtracting twice the first equation (140 = 2c + 2p) from the second, we get60 = 2porp = 30 pigsRewriting the first equation as c = 70 - p, we get c = 40 chickens.
18 cats,22 birds and 36 dogs....
Chickens have two legs . Hence 9 x 2 = 18 Dogs have four legs ; Hence 2 x 4 = 8 Cats also have four legs ; hence 4 x 3 = 12 18 + 8 + 12 = 40 Hence answer is TRUE!!!!!!
Take P to be the number of pigs and C to be the number of chickens. Because both anamals have a head, the sum of C and P is 143, or C + P = 143 Because a chicken contributes 2 legs and a pig contributes 4, C times 2 plus P times 4 equals the total number of legs, or 2C + 4P = 478 divide this equation by 2 to get C +2P = 239 Subtract the first equation from this one P = 96 plug this into the first equation C + 96 = 143 C = 47 96 Pigs and 47 chickens
2c + 4p = 40 c + p = 13 so 2c + 2p = 26 so 2p =14 p = 7, c = 6 Check: 7 pigs = 28 legs, 6 chickens = 12 legs, total 40 legs. QED
On a farm there are chickens and three-legged-cows. There are total of 49 heads and 130 legs. How many chickens are on the farm?
85 chickens
There are 42 chickens in the farm.
there are 36 horses and 23 chickens.........
Suppose there are x chickens and y cows Then heads => x + y = 64 And Legs => 2x + 3y = 147 2*Heads: 2x +2y = 128 Subtract from Legs: 19 = y Substitute in Heads: x = 45 Answer: 45 chickens.
35 pigs, 65 chickens
There are 61 horses and 10 chickens on the farm.
27
7 cows and 11 chickens. Cows have 4 legs. Chickens have 2 legs. (4 legs)(7 cows) + (2 legs)(11 chickens) = 50 legs. 7 cow heads = 11 chicken heads = 18 heads.
If all were horses there would be 428 legs. The shortfall of 36 legs represents 18 chickens so there are 89 horses.
Do-it-in-your-head method: If all animals were chickens there would be 96 legs. There are 26 extra legs, each on a cow, so there are 26 cows and therefore 22 chickens.
Do-it-in-your-head method: If all animals were chickens there would be 90 legs. There are 20 extra legs, each on a cow, so there are 20 cows and therefore 25 chickens.