21% reptiles, 11% are birds. There are a total of 1,500 animals in the zoo. Is this the correct proportion that I wrote to solve?

21/100=r/1,500***
11/21=r/1,500
11/100=r/1,500
100/21=r/500

What is the opposite of 62/7?
26/7
-7/62
7/62
-62/7****

2 answers

Both of your answers are correct.
Thx!