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