Math

posted by .

There are 18 animals in the barnyard. There are 50 legs. How many cows and how many chickens are there in the barnyard?


Technically, I wonder if a chicken is an animal. And are chickens and cows the ONLY "animals" in the barnyard.
If we assume a chicken is an animal and that we have only chickens and cows in the barnyard, then let
X = number of chickens
Y = number of cows.
You can write two equations.
X + Y = 18 (total chickens and cows)
2X + 4Y = 50 (number of legs).
Solve for X and Y. Post your work if you get stuck.

Put your equations in the TI-83 plus put it in matrices. Go to Edit then type in where it says 1X1 put 2 X3 then type in the first equation like puting it straight across.Like 1 1 18 and then you do the second equations like you did the first equation. Then exit out then go back to matrices go to B mash go back the matrices then go to names then go to the thing that you type in mash that then mash enter again. The answer for x and y is at the end the answer to this problem is x=11 and y=7.

Put your equations in the TI-83 plus put it in matrices. Go to Edit then type in where it says 1X1 put 2 X3 then type in the first equation like puting it straight across.Like 1 1 18 and then you do the second equations like you did the first equation. Then exit out then go back to matrices go to B mash go back the matrices then go to names then go to the thing that you type in mash that then mash enter again. The answer for x and y is at the end the answer to this problem is x=11 and y=7.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math question (counting)

    When Josh was visiting his family’s farm, he saw that the farm only raised chickens and cows. Josh counted 38 heads and 100 feet in the barnyard. How many chickens and how many cows were in the barnyard?
  2. Math

    How to solve: There are 40 chickens and cows in the farmyard. There are 100 legs in all. How many are cows and how many are chickens
  3. Algebra 1

    a farmer raises chickens and cows. there are 34 animals in all. the farmer counts 110 legs total on these animals. how many chickens and how many cows are on this farm?
  4. Math

    There are 38 animals at a farm.some are cows some are chickens all together there are 124 legs . How many cows and how many chickens?
  5. Monday

    There are 18 animals in the farm. Some are chickens and some are cows. I counted 50 legs in all. How many of the animals are cows and how many are chickens?
  6. Math

    There are 18 animals in the farm. Some ar chickens and some are cows. I counted 50 legs in all. How many of the animals are cows and how many are chickens?
  7. Math

    There are 40 cows and chickens in a farmyard. One quiet afternoon, Lola counted and found that there were 100 legs in all. How many cows and how many chickens are there?
  8. Math

    There are 12 animals in a farm.some are cows the rest are chickens.there are 28 animals legs in all.how many cows are there?
  9. Math

    3/5 of the animals on the farm are cows. The rest are chickens. There are 18 cows. How many are chickens?
  10. Math

    A farmer kept track of his cows and chickens by counting both the legs and the heads, if he counted 78 legs and 35 heads, how many cows and how many chicken did he own?

More Similar Questions