Time and Distance Practice Test 3 with solutions

Question : 19 of 40

Marks: +1, -0

Without stoppages, a bus travels a certain distance with an average speed of 70 km/hr and with stoppages, it covers the same distance at an average speed of 50 km/hr. Find the time spent on stoppages on an average per hour.

20 minutes
10 minutes
15 minutes
18 minutes
None of these

Validate

Solution:

Let the distance covered by the bus = 350 km
Time taken at an average speed of 70 km/hour
=

{350}/{70}

= 5 hours.
Time taken at an average speed of 50 km/hour
=

{350}/{50}

= 7 hours
Hence the time wasted on stoppages = 2 hours
In 7 hours, time wasted = 2 hours = 120 minutes
In 1 hours, time wasted =

{120}/7

~ 18 minutes

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