Time and Distance Practice Test 1 with solutions

Question : 40 of 40

Marks: +1, -0

A salesman travels a distance of 50 km in 2 hours and 30 minutes. How much faster, in kilometer/hour, on an average, must he travel to make such a trip in 5/6 hour less time?

Validate

Solution:

Original speed of the salesman =

{50}/{5/2}

= 20 km/hr.
Now,

x(5/2-5/6)

= 50
⇒

x× 5/3

= 50
∴ x = 30 km/hr
Hence, increase in speed = 30 – 20 = 10 km/hr

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