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An Air Force plane left Rome seven hours before a cargo plane. The planes flew in opposite directions. The cargo plane flew at 350 mph for two hours. After this time the planes were 4480 mi. apart. What was the Air Force plane's speed?

 Feb 28, 2020
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The air force plan flies   4480 mi -  350 m/hr * 2 hr  = 3780 miles   in 9 hours 

3780 m /9 hr = ..........   m/hr

 Feb 28, 2020

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