Answer:
I’m not sure but I got this question asked before
Step-by-step explanation:
Answer:
250 km/h
Step-by-step explanation:
Let the speed of the jet stream be x and the time it took the jet to return to the base as y.
It took the plane 2 hours and 24 minutes for the journey.
The total hours into a fraction is 12/5 hours
The speed of the plane is 750km/h
So the speed against the jet stream is 750-x
The speed with the jet stream is 750+x
distance = time x speed
You can put an equation like this :
800/(750-x) + 800/(750+x)=12/5
800/(750-x) is the time that it took to travel 800km against jet stream
800/(750+x) is the time that it took to travel 800 km with the jet stream
Multiply the denominators with the least common multiple :
800(750+x)/(750-x)(750+x)+800(750-x)/(750-x)(750+x)=12/5
1200000=12/5(750-x)(750+x)
1200000=12/5(562500-x^2)
1200000=1250000-12/5(x^2)
12/5(x^2) = 150000
x^2 = 62500
x=250
Hope this helps even after 2 years XD
