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Q. Vijay drives a scooter on a straight highway at a uniform rate of 40km/h and then at a uniform rate of 50km/h for 1 hr .
Calculate the average speed for the whole journey .
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Total Distance cover by Vijay=(40+50)km=90km.
Total Time by Vijay to cover that distance=(2X1)h=2h.
The average speed for the whole journey=Total Distance Travel/Total Time taken=90km/2h=45km/h.
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