In a school of 750 students, 320 are girls. 559 students do some kind of sport. If 101girls do no sport, how many boys also do no sport?

Answer 1

559 students do some kind of sports, therefore:

750 - 559 = 191

students do no sports

if 101 girls do no sports then:

191 - 101 = 90

boys also do no sports