Question

A train travels 380 miles in 5 hour 15 minutes. Calculate its average speed.

Answer 1

distance=speed ×time

distance =350 miles

time=5hours 15minutes

average speed=?

distance= speed ×time

350=speed×5.15

speed=350÷5.15

speed=73.78km /h

Answer 2

Answer:

Step-by-step explanation:

$Speed = \frac{Diastance}{Time}$

Average speed = Total distance traveled

                              Total time taken

Converting miles into km we get,

1 mile - 1.6 km

380 miles - 608 km

Total time taken in hours - $5+\frac{1}{4} = \frac{21}{4} hrs$

So,

$\frac{608}{\frac{21}{4} } = \frac{608 X 4}{21} = 28.95 X 4= 115.8km/hr$