11 items are filed under this topic.
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Average rate for a return trip |
2015-03-14 |
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From Michael:
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.
Answered by Penny Nom. |
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A train from Vancouver to Whistler |
2015-02-02 |
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From Tea:
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 :)
Answered by Penny Nom. |
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Adding speeds |
2012-08-26 |
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From Roy:
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.
Answered by Harley Weston. |
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The average speed for the whole journey |
2011-10-30 |
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From Shahzad:
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?
Answered by Penny Nom. |
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Average speed |
2011-03-07 |
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From West:
Calculate the distance (in km) that Larry runs if he maintains an average speed of 8km/hr for 45 minutes
Answered by Penny Nom. |
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Average speed |
2009-09-11 |
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From john:
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?
Answered by Penny Nom. |
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Average speed |
2009-08-20 |
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From Christina:
We ran 3.4 miles in 40 minutes. What was our average speed?
Answered by Leeanne Boehm. |
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Driving to school and back |
2009-05-17 |
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From marylyne:
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?
Answered by Penny Nom. |
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Average speed up and down a hill |
2008-03-09 |
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From Judith:
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?)
Answered by Penny Nom. |
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Approximate average speeds |
2007-03-19 |
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From Anne:
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!!
Answered by Stephen La Rocque and Penny Nom. |
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Cincinnati to Winston-Salem |
2001-01-23 |
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From Belinda:
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?
Answered by Leeanne Boehm and Claude Tardif. |
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