A cat leaps 5 leaps for every 4 leaps of a dog, but 3 leaps of the dog are equal to 4 leaps of the cat. What is the ratio of the speed of the cat to that of the dog?

Explanation:-

Given;
3dog = 4 cat;
Or, ^dog/_cat = ⁴/₃;
Let cat's 1 leap = 3 meter and dogs 1 leap = 4 meter.
Then, ratio of speed of cat and dog = ^3*5/_4*4 = 15:16.