What is the ratio in its simplest form? <br> 35 : 25 : 15 = <input min="0" type="number" id ="imp5pg090q1b_1" class="lineinput" placeholder="?" /> : <input min="0" type="number" id ="imp5pg090q1b_2" class="lineinput" placeholder="?" /> : <input min="0" type="number" id ="imp5pg090q1b_3" class="lineinput" placeholder="?" />