In a classroom, the ratio of the number of boys to the number of girls was 2 : 3.<br>After an equal number of boys and girls left the classroom for recess, the number of boys became $$\frac{2}{5}$$ of the number of girls.<br> If there were 14 children in the classroom in the end, how many children left the classroom for recess? <br> <input min="0" type="number" id ="imp6pg094q10_1" class="lineinput" placeholder="?" />