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David's airplane trip took 3.8 hours. For one-half of that time, the airplane flew at a speed
of 680 miles per hour, and for the rest of the time, it flew at a speed of 760 miles per hour.
What distance did David travel?

 Mar 10, 2021
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3.8/2=1.9

 

1.9*680+1.9*720\(\approx 2736\)

 Mar 10, 2021

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