Answer:
5 Zebras
Step-by-step explanation:
In the zoo, the ratio of Giraffes to Apes is 6 : 5
So, for 1 Ape there are [tex]\frac{6}{5}[/tex] Giraffes in the zoo.
Again, the ratio of Apes to Zebras in the zoo is 4 : 1.
So, for 1 Ape there are [tex]\frac{1}{4}[/tex] Zebras in the zoo.
Hence, the ratio of Giraffes to Apes to Zebras in the zoo is [tex]\frac{6}{5} : 1 : \frac{1}{4}[/tex]
Since, there are animals in whole number but not in fraction in the zoo, so the ratio in whole numbers is
[tex]\frac{6}{5} \times 20 : 1 \times 20 : \frac{1}{4} \times 20[/tex]
= 24 : 20 : 5
which is the most simplified whole number ratio of number of Giraffes, Apes and Zebras.
Therefore, there will be a minimum of 5 Zebras in the zoo. (Answer)