At the zoo the yellow birds are fed 1/3 of a bag of seed each day. the bluebirds get fed 1/4 as much as the yellow birds. how much of a bag of seed do the bluebirds eat each day?

The bluebirds are fed 7/12. 

First) You need to find a common denominator for the both of these fractions, which is 12. 

Second) You need to multiply 1/3 and 1/4 to have a denominator of 12. The equivalent fractions for them are 4/12 and 3/12.

Last) You just add the numerators together and you get 7/12 ( you don't need to simplify since it already is in simplest form)

Hope this Helps!