<PRE><B>Question 265146</B>
A car travels 330 miles in 6 hours. It travels at 50 mph for the first two hours and travels the last 180 miles at 60 miles per hour. It travels at constant speed for the remaining time. 

(a) How long did it take to travel the first 150 miles?  (hours)
time = distance/rate = 150/50 = 3 hrs
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(b) Where was the car after 3 hours?  (miles from the start)
distance = rate*time = 50*3 = 150 miles
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Cheers,
Stan H.</PRE>