header bg

Question:

A plane left San Francisco at 6:15 pm PST and arrived in Philadelphia at 2:45 am EST. How long was the flight?

A $5430_w20_h37.png$ hours
Explaination

First, convert 6:15 PST to 9:15 EST. The flight then took from 9:15 pm EST to 2:45 am EST. That means that the flight took $5430_w20_h37.png$ hours