Les say avg time to travel in train from NY to NJ is 75 mins

Question

Les say avg time to travel in train from NY to NJ is 75 mins.

Les say they get a faster train and they are 1000 times faster. What would be the new avg time to travel from NY to NJ?

I got 75 / 10.00 which is 0.75 sec?

Answer 1

1) $75\cdot60 = 4500$ seconds

2) $4500 / 1000 = 4.5$ seconds

So answer is $4.5$ seconds. You can't just divide $75$ by a thousand because there are $60$ seconds in a minute, not $100$