Respuesta :
we know that
speed = (total distance)/(total time)
so, total distance =60+180+540+660
total distance =1440 mi
total time =10+30+90+110
total time =240 min
now, we can change time into hours
total time =[tex] \frac{240}{60} hr [/tex]
total time =4 hours
now, we can find speed
[tex] speed=\frac{1440}{4} [/tex]
[tex] speed=360mph [/tex]
speed of the plane in miles per hour is 360 mph...........Answer
Answer:
C.360 mph
Step-by-step explanation:
We are given that distance in miles and time in min
We have to find the speed of plane in miles per hour
Distance (in miles):60 180 540 660
Time(in min): 10 30 90 110
Total distance travels by airplane=60+180+540+660=1440 miles
Total time =10+30+90+110=240 minute
Time in hours =[tex]\frac{240}{60}[/tex]=4 hours
Speed=[tex]\frac{Total \;distance}{Total\;time}[/tex]
Speed of plane =[tex]\frac{1440}{4}=360 miles/hour
Hence, the speed of the plane =360 mph
Therefore, option C is true