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. What is the average speed for the entire distance :

$60\frac{5}{123}{\text{ km/hr}}$$

$65\frac{5}{123}{\text{ km/hr}}$$

A man travels 600 km by train at 80 km/hr, 800 km by ship at 40 km/hr,

1.	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. What is the average speed for the entire distance :
A.	${\text{60 km/hr}}$$
B.	$60\frac{5}{123}{\text{ km/hr}}$$
C.	${\text{62 km/hr}}$$
D.	$65\frac{5}{123}{\text{ km/hr}}$$
Answer» E.

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