Mrs Ho had to be at the airport in 20 minutes.<br>The airport was 30 km away.<br>She drove at a speed of 80 $$km/h$$.<hr>Did she reach the airport in time? If not, at what minimum speed should she have driven her car? <br> <input min="0" type="number" id ="imp6pg165q1_1" class="lineinput" placeholder="?" /> $$km/h$$