In a Science experiment, Albert mixed plain water with lime water.<br>For every 20 $$ml$$ of lime water, he used 300 $$ml$$ of plain water. <hr> Find the ratio of the volume of lime water added to the volume of plain water added.<br> <input min="0" type="number" id ="imp6pg081q1_1" class="lineinput" placeholder="?" /> : <input min="0" type="number" id ="imp6pg081q1_2" class="lineinput" placeholder="?" />