Question

A chess club has 20 girls and 15 boys. seven of the girls and 7 of the boys in the chess club are also in the math club.

what percent of the students in the chess club are also in math club?​

Answer 1

40% why? because 20+15=35 that is the total but they are saying 7 boys and 7 girls are in math and chees so is 14 14/35 is 40%