What is the sum of students who does not participate in dance and play from class VI and IX together.

Students who don’t participate in dance and play from class VI

=500−(15%+8%)???????? 500

=500− $frac{{23}}{{100}} imes 500$

=500−115 =385

Students who do not participate in dance and play from class IX

=250−(10%+12%)×250

=250−55 = 195

Required sum = 195 + 385 = 580