Taxi Ride

A taxi driver was called to take a group of passengers to the train station. The station is normally an hour away, but with traffic being extra heavy, it took a full hour and a half. On the return trip the traffic was still as heavy and yet it took only 90 minutes. Why?

Answer soon.

uh isn't 90 mins. 1 1/2 hours?!

smarty pants.

Answer

There is no difference. An hour and a half is the same as 90 minutes