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11 articles trouvés pour ce sujet.
Average rate for a return trip 2015-03-14
Michael pose la question :
Jeffrey drove to a town 25 miles away at an average speed of 50 miles per hour. The return trip along the same route took 20 minutes longer than the trip to town. Determine the average speed in miles per hour for Jeffrey's round trip.
Penny Nom lui répond.
A train from Vancouver to Whistler 2015-02-02
Tea pose la question :
Serena and Nina are taking a train from Vancouver to Whistler, a 160km trip. If the average speed is decreased by 16km/hr, the trip will be 1/2 hours longer. What is the average speed of the train? Thanks :)
Penny Nom lui répond.
Adding speeds 2012-08-26
Roy pose la question :
May I ask if it is correct to add the following with units included? Some tell me that the units cannot be included in the addition because we cannot add speed.
Harley Weston lui répond.
The average speed for the whole journey 2011-10-30
Shahzad pose la question :
a train travels 68 Km at an average speed of 51Km/h. It then travels another 20Km at an average speed of 40Km/h before reaching its destination. Calculate the average speed for the whole journey?
Penny Nom lui répond.
Average speed 2011-03-07
West pose la question :
Calculate the distance (in km) that Larry runs if he maintains an average speed of 8km/hr for 45 minutes
Penny Nom lui répond.
Average speed 2009-09-11
john pose la question :
Sally travels by car from one city to another. She drives for 20.0 min at 68.0 km/h, 40.0 min at 37.0 km/h, and 51.0 min at 77.0 km/h, and she spends 12.0 min eating lunch and buying gas.

What is the average speed for the trip?

Penny Nom lui répond.
Average speed 2009-08-20
Christina pose la question :
We ran 3.4 miles in 40 minutes. What was our average speed?
Leeanne Boehm lui répond.
Driving to school and back 2009-05-17
marylyne pose la question :
suppose you are late for school and you drive from your house at a constant rate of 70 mph.when class is over, you drive home at a more leisurely 50mph. what is your average speed?
Penny Nom lui répond.
Average speed up and down a hill 2008-03-09
Judith pose la question :
An old broken-down ar has to travel a two miles route, up and down a hill. Because it is so old, the car travels the first mile - the ascent - at an average speed of fifteen miles per hour. How fast must it cover the second mile - the decent - to achieve an average speed of thirty miles per hours? (There is a missing variable, but what is it?)
Penny Nom lui répond.
Approximate average speeds 2007-03-19
Anne pose la question :
A bicyclist pedaled up a 2 mile long hill averaging 4 miles per hour. Upon reaching the top, the bicyclist headed down a 6 mile descent averaging 26 mph. What was the bicyclist's approximate average speed? Thanks very much in advance!!
Stephen La Rocque and Penny Nom lui répond.
Cincinnati to Winston-Salem 2001-01-23
Belinda pose la question :
Joan Bedney travels from Cincinnati to Winston-Salem at an average rate of 40 miles per hour and returns at an average rate of 60 miles per hour. What is her average speed for the trip?
Leeanne Boehm and Claude Tardif lui répond.



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