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 ->  Customizable Word Problem Solvers  -> Misc -> 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      Log On

Ad: Over 600 Algebra Word Problems at edhelper.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) About Me  (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:
2x%2B4y=140feet
We isolate "x" since we're looking for it (no. of hens).

2x=140-4y ---> cross%282%29x%2Fcross%282%29=%28140-4y%29%2F2
x=%28140-4y%29%2F2 ....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