Problema Solution
an airplane flew for 8 hours at an airspeed of x miles per hour, and for 7 more hours at 325 mph. If the average airspeed for the entire flight was 350 mph, find the value of x.
Answer provided by our tutors
the average airspeed = the total distance of the flight / the total time of the flight
and also we know that distance = speed*time
350 = (8x + 7*325)/(8 + 7)
(8x + 7*325)/(8 + 7) = 350
by solving we find:
x = 371.875 mph
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