SOLUTION: A man has some hens and cows. If the number of feet equal 140, the number of hens will be a) 22 b) 23 c) 24 d) 26

Algebra.Com
Question 201891: A man has some hens and cows. If the number of feet equal 140, the number of
hens will be
a) 22 b) 23 c) 24 d) 26

Answer by jojo14344(1513)   (Show Source): You can put this solution on YOUR website!


Let "x" be the number of hens

Also, let "y" be the number of cows


Since a hen has 2 feet and a cow has 4 feet, it follows:

We isolate "x" since we're looking for it (no. of hens).

--->
....it stops here.

We need another eqn to continue. From the look of it, there's a missing data from the problem.

Most likely "the number of hens and cows?" ----> x+y=?, not given.
*Please confirm.

Thank you,
Jojo

RELATED QUESTIONS

question-A man has some hens and cows.If the number of heads be 48 and the number of feet (answered by mananth)
A person have some hens and some cows. Number of head is 38 and number of legs 100 then... (answered by stanbon,fractalier,ikleyn)
There is a certain number of hens and rabbits in a room. The numbers of feet of the hens... (answered by edjones)
A researcher selected 8 chicken farms from across the state for a study. The researcher... (answered by jim_thompson5910)
I am taking and entrance exam to get into a trade school Im having problems with these... (answered by nerdybill)
I need help with some of the following questions as far as and explanation on how to do... (answered by edjones)
a farmer keeps hens and rabbits in his farm.one day he counted a total of 70 heads and... (answered by Menjax)
a man when asked how many hens and buffaloes he has, told that his animals have 120 eyes... (answered by rwm)
20 hens housed in 3 pens will hatch 30 eggs in 80 days. How long will it take 30 hens in... (answered by ankor@dixie-net.com)