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Two motorists start from the same point at the same time and travel in opposite directions. One motorist travels 15 mph, faster than the other. In speed for each motorist .

Two motorists start from the same point at the same time and travel in opposite directions. One motorist travels 15 mph, faster than the other. In speed for each motorist . Correct Answer 47.5 and 62.5 mph

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A car traveled 75% of the way from town A to town B at an average speed of 50 mph. The car travels at an average speed of S mph for there remaining part of the trip. The average speed for the entire trip was 40 mph. What is the value of S, in mph?
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