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UPSC CDS Math Speed, Time and Distance Questions

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Question : 4

Total: 53

A race has three parts. The speed and time required to complete the individual parts for a runner is displayed on the following chart :

	Part I	Part II	Part III
Speed (kmph)	9	8	7.5
Time (minutes)	50	80	100

What is the average speed of this runner ?

8.17 kmph
8.00 kmph
7.80 kmph
7.77 kmph

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