The grasshopper, the frog and the mouse had a jumping contest. The grasshopper jumped 40 inches. The grasshopper jumped 22 inches farther than the frog and the mouse jumped 15 inches lesser than the frog. How far did the mouse jump?
The grasshopper jumped 40 inches. 
The grasshopper jumped 22 inches farther than the frog. 
The mouse jumped 15 inches lesser than the frog. 

So, if the grasshopper jumped 22 inches farther than the frog, that means the frog jumped 18 inches. 

And if the mouse jumped 15 inches lesser than the frog, that means the mouse jumped 3 inches.