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*A race car driver must average 200 km/hr for four laps to qualify for a race. Because of engine trouble, the car averages only 170 km/hr over the first two laps. What average speed must be maintained for the last two laps? The answer from my teacher is 243 km/hr but I don’t know how to solve to get that answer? Please help!!!
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*A race car driver must average 200 km/hr for four laps to qualify for a race. Because of engine tro...
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