SOLUTION: Mr. Punches drives 50 miles per hour for the first 3 hours of his trip. What wiuld his average speed have to be for the next 2 hours of his trip if the average speed for the whole
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Question 893963: Mr. Punches drives 50 miles per hour for the first 3 hours of his trip. What wiuld his average speed have to be for the next 2 hours of his trip if the average speed for the whole trip was 58 miles per hour
You can put this solution on YOUR website! Mr. Punches drives 50 miles per hour for the first 3 hours of his trip.
What would his average speed have to be for the next 2 hours of his trip, if the average speed for the whole trip was 58 miles per hour?
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Let s = the speed for the next two hrs
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We can find the total distance of the trip, he traveled for 5 hrs and averaged 58 mph.
58 * 5 = 290 mi
In the 1st 3 hrs he traveled
50 * 3 = 150 mi
therefore he traveled
290 - 150 = 140 mi in the last 2 hrs
Find the av speed = 70 mph for the last two 2 hrs
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Check this, with a time equation, time = dist/speed + =
