###Human: Carter is twice as tall as his 24” tall dog.  Betty is 12” shorter than Carter.  How tall is Betty in feet?, ### Assistant: Carter is twice as tall as 24” dog so he is 2*24 = 48”
Betty is 12” shorter than Carter so Betty is 48-12 = 36” tall
12" is the same as 1 foot so Betty is 36/12 = 3 feet tall 
 So the answer is :  3