কুকুর বিড়ালের ছোটাছুটি


A dog chases to catch a cat. When the dog jumps $4$ times, the cat jumps $5$ times. When the dog jumps $5$ times and the cat jumps $6$ times. The velocity ratio of dogs and cats can be expressed as $x:y,$ where $x$ and $y$ are both co-prime numbers. So $x+y=?$


Basic   BdMO  


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Attempt 334


Solve 223


First Solve Mesbatur_Rahman_Niloy