Question 1109564
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Sally is traveling 65 mph and Mark is traveling 50 mph. how long will it take Mark to catch up {{{highlight(cross(is))}}} <U>if</U> Sally had a two hour Head start ?
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If they do travel in the same direction along the straight line &nbsp;(as the condition assumes), &nbsp;then Mark will &nbsp;<U>NEVER</U>&nbsp; catch Sally.