SOLUTION: A person have some hens and some cows. Number of head is 38 and number of legs 100 then how many cows and hens
Algebra.Com
Question 999042: A person have some hens and some cows. Number of head is 38 and number of legs 100 then how many cows and hens
Found 3 solutions by stanbon, fractalier, ikleyn:
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A person have some hens and some cows. Number of head is 38 and number of legs 100 then how many cows and hens.
=======
Heads Equation:: h + c = 38
Legs Equation:: 2h +4c = 100
-------
Modify for elimination:
h + c = 38
h + 2c = 50
----
Subtract and solve for "c"::
c = 12 (# of cows)
----
h = 38-12 = 26 (# of hens)
--------------
cheers,
Stan H.
--------------
Answer by fractalier(6550) (Show Source): You can put this solution on YOUR website!
Calls hens and cows, x and y.
Thus x + y = 38
Now when we count legs, we have
2x + 4y = 100
Let's multiply the first equation by two and subtract...
2x + 4y = 100
-(2x + 2y = 76)
which gives
2y = 24
y = 12 cows
x = 26 chickens
Answer by ikleyn(52832) (Show Source): You can put this solution on YOUR website!
.
See the lesson Problem on animals at a farm in this site, where the similar problem was solved. You will find there another method of solving.
RELATED QUESTIONS
A man has some hens and cows. If the number of feet equal 140, the number of
hens will... (answered by jojo14344)
If there are 80 cows and hens and 208 legs, how many cows and hens
are there?
(answered by stanbon,ikleyn,Edwin McCravy)
question-A man has some hens and cows.If the number of heads be 48 and the number of feet (answered by mananth)
In a group of cows and chickens, the number of legs was 84 more then twice the number of... (answered by stanbon)
There are 11 animals in a barnyard. Some are chickens and some are cows. There are 38... (answered by Gersid)
cows+hens=48 there less are 146 how many... (answered by josmiceli)
A farmer had some chickens and some cows. She counted 40 heads and 126 legs. How many... (answered by rfer)
In a barn with cows and chickens, the number of legs was 16 more than twice the number of (answered by palanisamy)
There is a certain number of hens and rabbits in a room. The numbers of feet of the hens... (answered by edjones)