Let the number of squirells be 2x and number of chipmunks be 7x ,
Given that number of chipmunks is 49, so
= > 7x = 49
= > x = 49 / 7
= > x = 7
So the number of squirells will be 2x = 2( 7 ) = 14
[tex] \bold{There \: were \: 14 \: squirells \: in \: the \: yard}[/tex]