Average Practice Test 2

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Question : 13 of 40

Marks: +1, -0

James walks down from his home to school at the rate of speed of 9 km/h and returns at 13 km/h. Calculate his average speed for the entire journey.

9.86 km/h
10.63 km/h
9 km/h
8.75 km/h
10.86 km/h

Solution:

Average speed

=({2xy}/{x+y})=({2×9×13}/{9+13})

=234/22

= 10.63 km/h

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