Nancys airplane trip took 4 hour. for one-fourth of that time, the airplane flew at a speed of 880 km/h, it flew at a speed of 600 km/h. what distance did nancy travel?

So for a minute lets ignore the 880 km/h. If it took 4 hours and she flew at 600 km/h 600*4=2400. Now lets Look at the 880 bit. If it took 4 hours and she where to fly at 880 it would've been 880*4=3520. Lets do 2400-600=1800, now we've got the 600 kmh bit done. Now lets see if you fly 880 km/h for one hour then you add 1800+880=2680. 

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