800km.Half the distance, the airplane flies at a speed of 900km/h and for the rest of the distance, it flies at a speed of 760km/h. How long does the trip take?

Question

finding the amount of time it takes to travel half the distance 800km travelling at 900km/h and the other half at 760km/h

 

Answer 1

Hello Nkem,

 

time = distance/rate

 

for the first half of the flight:

 

time = 400/900 = 4/9 of an hour

 

for the second half of the flight:

 

time = 400/760 = 10/19 of an hour 

 

total time = 4/9 + 10/19 = 166/171

 

kind of a terrible fraction

 

If it takes 166/171 hours, this is about .971 hours

 

or 58.2 minutes

 

hope this helps