Time and Distance Practice Test 2 with solutions

Question : 36 of 40

Marks: +1, -0

A train covers a distance of 10 km in 12 minutes. If its speed is decreased by 5 km/hr, find the time taken by it to cover the same distance.

Solution:

Original speed of the train =

{10}/{{12}/{60}}

= 10 × 5 = 50 km/hr
Now, 45 × t = 50 ×

{12}/{60}

⇒ t =

{10}/{45}

hr
=

2/9

hr =

2/9 × 60

min
=

13 1/3

min = 13 min 20 sec.

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