Let P be the total animal population at the zoo. We know that

16% of P = number of leopards

16% of P = 44

Divide both sides by 4.

4% of P = 11

Now, multiply both sides by 25

100% of P = P = 25 11

Notice that it's easy to multiply by 11 without a calculator:

P = 25 11 = 25 (10 + 1)

P = 25 10 + 25 1 = 250 + 25 = 275

That's the total number of animals at the zoo.

Answer = (B)

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