Problema Solution
A jet flew at an average of 480 mph from Point X to Point Y. Because of the head winds, the jet average only 460 mph on the return ship, and the return ship took 15 minutes longer. How many hours was the flight from Point Y to Point X. How far is it from Point Y to Point X?
Answer provided by our tutors
Let S be the distance between X and Y.
We know that the average speed v =S/t where t is the time in hours. Thus t = S/v and we have
S/480 +15/60 = S/460
by solving we find
S = 2760 miles
click here to see the step by step solution of the equation
t = 2760/460 = 6 hours
So the distance between X and Y is 2760 miles, it takes 6 hours for the jet to go from Point Y to Point X.