A cargo plane flew to the maintenance facility and back. It took one hour less time to get there than it did to get back. The average speed on the trip there was 220mph. The average speed on the way back was 200mph. How many hours did the trip there take?

Question

anonymous · Answer

The distance travelled is the same going to and from. 

$$d_1=d_2$$$$v_1(t-1)=v_2t$$$$220t-220=200t$$$$20t=220$$$$t=11$$

So the trip there took 10 hours.

anonymous · Answer

can you break it down for me