How far from an airport can an airplane fly and return in 8 hours, if it's outgoing speed is 160 km per hour and it's returning

Question

Helen [10]

3 years ago

8

How far from an airport can an airplane fly and return in 8 hours, if it's outgoing speed is 160 km per hour and it's returning

speed is 240 km per hour

Mathematics

2 answers:

PilotLPTM [1.2K] · Answer 1 · 2022-06-13T11:51:01+03:00

<span>speed = distance/time
total time is 8 hours

outgoing speed is 160 km per hour,
so time = d/160

</span><span>returning speed is 240 km per hour,
so time = d/240

d/160 + d/240 = 8

3d/480 + 2d/480 = 8
5d/480 = 8
5d =480 (8)
5d = 3840
d=3840/5
d=768

answer: so the distance is 768 km</span>

iragen [17] · Answer 2 · 2022-06-13T14:03:13+03:00

iragen [17]3 years ago

4 0

T = 8 h
v1 = 160 km/h
v2 = 240 km/h

mmc 160 e 240 = 80
s = 80*8
s = 640 km