Time and Distance Practice Test 2 with solutions

Question : 25 of 40

Marks: +1, -0

On a journey across Kolkata, a taxi averages 50 km per hour for 50% of the distance, 40 km per hour for 40% of it and 20 per hour for the remaining. The average speed in km/hr for the whole journey is.

Validate

Solution:

Let the total distance = 100 kms.

Distance	Speed	Time
50	50 km/hr	1 hour
40	40 km/hr	1 hour
10	20 km/hr	1/2 hour
100		2.5hour

Average speed =

{\Total \distance}/{\Total \time}

{100}/{2.5}

= 40 km/hour

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