Answer: 135/8
4-1/2*3-3/4=9/2*15/4
9/2*15/4=18/4*15/4=15*18/4*4
15*18/4*4=270/16=135/8
The required distance is 16.40 km.
This problem can be solved if we know the concept of speed, time and distance.
We know the speed=
To solve the problem let us assume that the total distance between the workplace and home is x km.
Given that his speed while going from home to work is 45 mph and while returning is 35 mph.
Time for the complete journey is
.
Now according to question;

⇒
⇒
⇒ 
∴ 
So, the required distance is 16.40 km.
To learn more about speed, distance and time visit the link:
brainly.com/question/15256256
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The train's rate 140 mph. 700 divided by 5 equals 140.