SOLUTION: at exactly 12:00 pm two cars heading in opposite directions are aligned in parallel lanes of a highway. One car is moving 45 mph the other 55 mph. At what time will the cars be 20
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Question 907182: at exactly 12:00 pm two cars heading in opposite directions are aligned in parallel lanes of a highway. One car is moving 45 mph the other 55 mph. At what time will the cars be 20 miles apart?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
20=45*t+55*t
20=100*t
t=0.2 hours 12 minutes 12:12 pm
d=R*t
d=55*0.2
d=11.0 miles at 55 kph
d=r*t
d=45*0.2
d=9.0 miles at 45 kph
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