In a pet shop there are 120 eyes and 172 legs. How many birds and puppies are included in these?
Pick
A) Birds=34 , Puppies=26	B) Birds=36 , Puppies=26	C) Birds=34 , Puppies=20	D) Birds=32 , Puppies=24	E) Birds=38 , Puppies=24
Let there are x birds and y puppies.   Each bird and puppy has 2 eyes. Each bird has 2 legs and each puppy has 4 legs.   Then   2x+2y = 120 =&gt; x+y = 60----------(1)   2x+4y = 172 =&gt; x+2y = 86-----------(2)   Solving (i) and (ii) we get   y = 26 &amp; x = 34   So birds are 34 and puppies are 26. Birds=34 , Puppies=26nswer : Birds=34 , Puppies=26
<result>A</result>
In a pet shop there are 120 eyes and 172 legs. How many birds and puppies are included in these?