Question

Of the 600 students in a school, 1/3 are in the band, 1/5 sing in the choir, and 1/4 of the remainder are in the drama club. No student is in more than one of these activities. How many of the school's students do not participate in any of these activities?

Answer 1

130

Answer 2

if total student =t=600
600/3=200 are in band
600/5=120 sing choir
remainder =600-200-120=280 so
280/4=70 are in drama club
total participents will be then 200+120+70=390
=>600-390=210 are non pariticipents abtucally