A helicopter bound for Cebu makes a flight in 2 1/2 hours. The return flight takes 1 3/4 hours. The difference in speed is 250 km/hr. What is the average speed for each of the flight?
2007-10-06 15:45:19 · 6 answers · asked by Anonymous in Cars & Transportation ➔ Aircraft
Let the upward speed be x.
So the distance is 2.5x.
Now to travel a distance of 2.5x km at (x+250) kmph takes 1.75 hours.
Or 2.5x = 1.75(x+250)
2.5x = 1.75x + 437.5
2.5x - 1.75x = 437.5
0.75x = 437.5 or x = 583.33 kmph
So total distance is 583.33*2.5 = 1458.325 km
Average speed upwards 583.33 kmph
Average speed down 583.33 + 250 = 833.33 kmph
Thats too fast for a helicopter!
2007-10-06 16:30:43 · answer #1 · answered by ? 6 · 4⤊ 0⤋
Who keeps coming up with this crap that is of no use to a pilot or anybody else? Jeez. Don't get in an aircraft, you'll be so busy figuring out useless information you'll forget the fuel.
2007-10-07 00:46:31 · answer #2 · answered by Anonymous · 3⤊ 0⤋
Pretty hard to figure without the one way distance or a starting point so it can be figured....
2007-10-06 22:52:45 · answer #3 · answered by Anonymous · 0⤊ 0⤋
take a high school algebra course, you'll enrich your mind, and get a confidence boost
2007-10-10 20:52:07 · answer #4 · answered by nortonclarkson 4 · 0⤊ 0⤋
Sorry, I suck at story problems.
2007-10-10 22:13:51 · answer #5 · answered by "Johns" 7 · 0⤊ 0⤋
Please consults a legal aviator mathematcian for a accurate answer, thank you.
2007-10-10 19:58:07 · answer #6 · answered by Ranger 2 · 0⤊ 0⤋