Trivia question?

Question

simpson drives his car with an average velocity of 48.2km/h to the east.
How much time would simpson save by incrasing his average velocity to 68.8km/h to the east? answer in min.
Explain answer...

Answer 1

You can't actually give a time as you don't know how far he is going.

If it is 100km, it would take 124.48 mins at 48.2 or 87.21 mins at 68.8.

So he would save 37.27 minutes for every 100 kms