Time and Distance Practice Test 4 with solutions

Question : 2 of 38

Marks: +1, -0

A train when moves at an average speed of 40 km/hr, reaches its destination on time. When its average speed becomes 35 km/hr, then it reaches its destination 15 minutes late. What is the distance of the journey?

80 km
70 km
40 km
30 km

Validate

Solution:

Let x km be the distance of journey; then

x/{35}-x/{40}

{15}/{60}

⇒

x/7 - x/8

{15}/{12}

⇒

x/{56}

5/4

∴ x = 70 km

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