SOLUTION: In a backyard, there ate boys and dogs. There are 22 heads all in all and 68 feet. How many boys are there? a.8 b.10 c.12 d.14 e.15

Algebra ->  Problems-with-consecutive-odd-even-integers -> SOLUTION: In a backyard, there ate boys and dogs. There are 22 heads all in all and 68 feet. How many boys are there? a.8 b.10 c.12 d.14 e.15      Log On


   

Question 903685: In a backyard, there ate boys and dogs. There are 22 heads all in all and 68 feet. How many boys are there?
a.8
b.10
c.12
d.14
e.15
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi

b + d = 22

2b + 4d = 68



-2b -2d = -44

2b + 4d = 68

 2d = 24

  d = 12  and the number of boys is 1022-11

And...

20 + 48 = 68 (number of feet they have)