Norman High School enrolls an average of 4000 students every year. Butler High School, the neighboring school, enrolls an average of 3/4 as many students as Norman High School. How much greater is the average enrollment at Norman High School than the enrollment at Butler High School?
If Norman High School enrolls an average of 4000 students every year, Butler High School school enrolls an average of 3/4*4000 =<<4000*3/4=3000>>3000 students every year.
The average enrollment at Norman High School is greater than the enrollment at Butler High School by 4000-3000= <<4000-3000=1000>>1000
#### 1000