Time and Distance Practice Test 2 with solutions

Question : 14 of 40

Marks: +1, -0

A man travels 600 km by train at 80 km/hr, 800 km by ship at 40 km/hr, 500 km by aeroplane at
400 km/hr and 100 km by car at 50 km/hr. The average speed for the entire distance is:

$65 5/{123}$ km/hr
62 km/hr
$60 5/{123}$ km/hr
60 km/hr

Validate

Solution:

Required average speed =

{600+800+500+100}/{{600}/{80}+{800}/{40}+{500}/{400}+{100}/5}

{2000}/{{15}/2+20+5/4+2}

{2000}/{{123}/4}

{8000}/{123}

65 5/{123}

km/hr

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