The number of robins that visited the feeder is given by the value of the ratio that represents robins divided by the total ratio times the total number of the birds.

The total ratio is 11; 4 +7

The total number of birds is 132,

The value of the ratio that represents robins is 4

So you will have 4/11 x 132, which is 48 robins.

Hope this helps! Please
best me if it does or ask any question if you are not satisfied!

May 12th, 2015

Are you comfortable?

May 12th, 2015

Did you know? You can earn $20 for every friend you invite to Studypool!