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A certain zoo has mammals and reptiles and birds, and no other animals. The ratio of mammals to reptiles to birds is 11:8:5. How many birds are in the zoo?
(1) there are twelve more mammals in the zoo than there are reptiles
(2) if the zoo acquired 16 more mammals, the ratio of mammals to birds would be 3:1
Title
Zoo Ratio
Your Result
Correct
Difficulty
Hard
Your Pace
0:02
Others' Pace
1:52