Selected flights' information is shown in the table below.&nbsp;&nbsp;<br>John arrived at 8.45am in Hong Kong and took flight JKL 23 to return to Singapore the same night. How long did John spend in Hong Kong? <br> His stay in Hong Kong was <input min="0" type="number" id="imp3pg210q10_1" class="lineinput" placeholder="?"> h <input min="0" type="number" id="imp3pg210q10_2" class="lineinput" placeholder="?"> min long.