At first, there were 60 pupils in a classroom. $$\frac{1}{4}$$ of the boys and $$\frac{1}{3}$$ of the girls left the room. In the end, there were 42 pupils in the classroom. <hr> Find the number of boys band the number of girls in the classroom at first. <hr> Number of boys <input min="0" type="number" id ="imp6pg063q4_1" class="lineinput" placeholder="?" /> <br> Number of girls <input min="0" type="number" id ="imp6pg063q4_2" class="lineinput" placeholder="?" />