SOLUTION: A motorist does the first part of the journey at an average speed of 54 km/h. He then increases his speed to 60 km/h for the rest of the journey. If he travels 225 km in 4 hours, w
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Question 938406: A motorist does the first part of the journey at an average speed of 54 km/h. He then increases his speed to 60 km/h for the rest of the journey. If he travels 225 km in 4 hours, what is the distance traveled for the first part of his journey? Answer by ewatrrr(24785) (Show Source):
You can put this solution on YOUR website! x the distance for the first part of his journey
.. |Multiplying thru by 540 so as all denominators = 1
10x + 9(224-x) = 2160
x = 144mi, the distance for the first part of his journey
