There were 6 zebras and 3 tigers at the zoo.
i.e. In zoo,
Number of Zebra = 6
Number of tigers = 3
The ratio of tigers to zebras is express as = number of tigers : number of zebras
So, the ratio of tigers to zebras is express as:
Thus, The ratio of tigers to zebras is 1 : 2
Answer = 1 : 2