juliecoco9090 juliecoco9090

23-05-2017
Mathematics

contestada

PLEASE HELP ASAP!!!!!!!!!!

A plane traveling from Phoenix to San Francisco with a tailwind of 35 miles per hour takes 2.5 hours. Returning with the headwind, it takes the same plane 2 hours and 45 minutes. What is the average speed of the plane in calm conditions?
a. 695 miles/hour
b. 715 miles/hour
c. 735 miles/hour
d. 755 miles/hour

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arosebw arosebw

23-05-2017

I think it is 715 mph but I may have done my math wrong....

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