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borishaifa [10]
3 years ago
7

Three times as many robinsas cardinals visited a bird feeder. If a total of 20 robin and cardinals visited the feeder, how many

were robins
Mathematics
1 answer:
Agata [3.3K]3 years ago
4 0
X=# of cardinals
3 times as many robins as cardinals visited the feeder, so # of robins=3x
robins+cardinals=20, so x+3x=20
4x=20
x=5 cardinals
20-x=15 robins
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