As per given data-
Tiger takes 4 leaps for every 5 leaps of dog.
∴ Ratio of leaps of tiger to dog = 4 ? 5
As stated in data 1 leap of tiger is equal to 4 dog leaps.
∴ Converting tiger leaps into dog leaps-
∴ Speed of tiger ? speed of dog
4 × 4 ? 5
⇒ 16 ? 5