<human>:  Of the 600 students at River Falls High School, 3/4 of them play tennis. Of those that play tennis, 60% of them also play hockey. How many students play both hockey and tennis?
<bot>: How many students play tennis? ** 3/4 of the students at River Falls High School play tennis, a total of 3/4*600=<<3/4*600=450>>450 students
How many students play hockey and tennis? ** Of those that play tennis, 60% of them also play hockey, meaning 60/100*450=<<60/100*450=270>>270 students play hockey and tennis.
#### 270