The grasshopper, the frog and the mouse had a jumping contest. The grasshopper jumped 39 inches. The grasshopper jumped 19 inches farther than the frog and the mouse jumped 12 inches lesser than the frog. How far did the mouse jump?
First, we need to find how many inches the frog jumped. The frog jumped 19 inches less than the grasshopper, so we can say that the frog jumped 20 inches. 

Next, we need to find how many inches the mouse jumped. The mouse jumped 12 inches less than the frog, so we can say that the mouse jumped 8 inches. 

Therefore the answer (numeric) is: 

8