The number of girls in a college was 50 less than the number of boys. Later, some girls joined the college, and the ratio of boys to girls became 2 : ...
Question
The number of girls in a college was 50 less than the number of boys. Later, some girls joined the college, and the ratio of boys to girls became . Find the minimum number of girls who joined the college recently, given that the number of boys and girls are positive integers.