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A reconnaissance plane flies 425 km away from its base at 212 km/h, then flies back to its base at 305 km/h. What is its average speed?


______ km/h

Oct 21st, 2017

The average speed is the sum of the given speeds divided by 2

So,here it would be 212+305/2 

=517/2

=258.5 km/h

I hope it helped! :)

Mar 3rd, 2015

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Oct 21st, 2017
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