<PRE><B>Question 1136050</B>
rate * time = distance
:
4/60 = 1/15 = 0.066666 is approximately 0.07 hour
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If the car takes for 4 minutes between lights it will be in sync and
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Note 2 minutes is too fast, 3.5/0.03 = 116.6667 km/hr
:
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rate = 3.5/0.07 = 50 km/hr
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