In a school, 24% of the pupils come to school by bus. The percentage of pupils coming to school by car is twice the percentage of pupils coming to school by bus. The rest of the pupils walk to school. What is the ratio of the number of pupils coming to school by bus to the number of pupils comin to school by car to the number of pupils walking to school? Give your answer in simplest form. <br> <input min="0" type="number" id ="imp5pg184q13_1" class="lineinput" placeholder="?" /> : <input min="0" type="number" id ="imp5pg184q13_2" class="lineinput" placeholder="?" /> : <input min="0" type="number" id ="imp5pg184q13_3" class="lineinput" placeholder="?" />