Time and Distance Practice Test 1 with solutions

Question : 29 of 40

Marks: +1, -0

Starting from a point at a speed of 4 km/hr a man reaches at a cerain place and returns back to the point from where he had started journey on bicycle at the speed of 16 km/hr. His average speed during the entire journey will be :

6.4 km/h
8.4 km/h
5.4 km/h
10 km/h

Validate

Solution:

Average speed during the entire journey =

{2xy}/{x+y}

{2×4×16}/{4+16}

{8×16}/{20}

= 6.4 km/hr.

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