d=r*t

3200=450*t+350*t

3200=800*t

t=3200/800

t=4 hours

4 hours from 8:00 AM is 12:00 Noon

Brandy D.

asked • 08/29/15Two airplanes leave the same airport at 8:00 a.m. traveling in opposite directions. The northbound plane is traveling at 450 mph (relative ground speed) and the southbound plane is traveling 350 mph (relative ground speed). At what time will the two planes be 3200 miles apart?

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d=r*t

3200=450*t+350*t

3200=800*t

t=3200/800

t=4 hours

4 hours from 8:00 AM is 12:00 Noon

Alexei M. answered • 08/29/15

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