The length of a rectangle is 9 cm and its perimeter is 30 cm. <hr>The ratio of the breadth to the length of the rectangle is <br><input min="0" type="number" id ="imp5pg099q2_1" class="lineinput" placeholder="?" /> : <input min="0" type="number" id ="imp5pg099q2_1" class="lineinput" placeholder="?" />.