Answer to Question #4307 in Combinatorics | Number Theory for faye
a school has 1200 pupils.575 of these pupils are girls .
2, 5ths of the girls like sport , 3, 5ths of the boys like sport ,whats the total number of pupils in the school who like sport??
We must calculate the total number of boys who like sport and the total number
of girls who like sport. So:
(1200-575) * 3 / 5 + 575 * 2 / 5 = 605.