SOLUTION: Three times as many robins as cardinals visited a bird feeder. If a total of 20 robins and cardinals visited the feeder, how many were robins ?

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Question 548678: Three times as many robins as cardinals visited a bird feeder. If a total of 20 robins and cardinals visited the feeder, how many were robins ?
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
there is a 3:1 ratio.
3+1=4
1/4 cardinals
3/4 robins
20 * 1/4 = 5
20 * 3/4 = 15
.
Ed