The grasshopper, the frog and the mouse had a jumping contest. The grasshopper jumped w inches. The grasshopper jumped x inches farther than the frog and the mouse jumped y inches lesser than the frog. How much farther did the grasshopper jump than the mouse?
First, we need to find out how much the frog jumped. We know that the grasshopper jumped w inches, and we know that the grasshopper jumped x inches farther than the frog. This means that the frog must have jumped w - x inches. 

Now, we need to find out how much the mouse jumped. We know that the frog jumped w - x inches, and we know that the mouse jumped y inches lesser than the frog. This means that the mouse must have jumped w - x - y inches. 

Finally, we need to find out how much farther the grasshopper jumped than the mouse. To do this, we need to subtract the distance that the mouse jumped from the distance that the grasshopper jumped. We know that the grasshopper jumped w inches, and we know that the mouse jumped w - x - y inches. This means that the grasshopper jumped w - (w - x - y) inches. 

This means that the grasshopper jumped x + y inches farther than the mouse.

Therefore, the answer (symbolic expression) is: 

x + y