IN A RACE FROM POINT X TO POINT Y AND BACK, JACK AVERAGES 30 MILE...
20. In a race from point X to point Y and back, Jack averages 30 miles per hour to point Y
and 10 miles per hour back to point X. Sandy averages 20 miles per hour in both
directions. If Jack and Sandy begin the race at the same time, who will finish first?
Jack
Sandy
They tie
Neither
Impossible to tell