<PRE><B>Question 1083743</B>
use rate * time = distance
:
time = 550 / 50 = 11 hours
:
Alex wants to reuce his travel time by 1 hour = 11 - 1 = 10 hours
:
rate = 550 / 10 = 55 mph
:
************************************************************
Alex needs to average 55 - 50 = 5 mph faster than the 50 mph
************************************************************
:</PRE>