The time is 11.55.<br>Mr Tan needs to run from his office to the food centre, which is 450 $$m$$ away.<hr> What is his minimum running speed if he needs to reach it before 12.01 in $$m/min$$? <br> <input min="0" type="number" id ="imp6pg156q8_1" class="lineinput" placeholder="?" /> $$m/min$$