<span><span>900=<span>22 x </span><span>32 x </span><span>52</span></span><span>900=<span>22 x </span><span>32 x </span><span>52</span></span></span><span>. There is only a limited number of options to build squares out of these factors. You can try them all, but in fact it is easy to see that the solution to your problem is </span><span><span>p=<span>22 x </span><span>32</span>=36</span><span>p=<span>22 x </span><span>32</span>=36</span></span><span> and </span><span><span>Q=<span>52</span>=25</span><span>Q=<span>52</span>=25</span></span><span>. Their sum is 61.</span>
Time taken for Kristin to catch up with the truck will be found using the formula time=(distance)/(speed) distance=20 km speed=90 km/h thus time=20/90=2/9 hours
