two lap average - revisited

Andrei drives a 60 mile closed course in 1 hour.[br][br]How fast does he have to drive a second lap[br]in order to average 120 miles per hour for the two laps?[br][br][br][size=85][[i]compare and contrast this applet with "The Repentant Reader - revisited" in the mathMINDhabits archive[/i]][/size]

Information: two lap average - revisited