Answer:
C. 200 hours
Explanation:
According to the given Question ,
- Speed of Aeroplane is 400miles/hour
It means that the aeroplane covers 400 miles in 60 minutes.
and it is asked for 30 minutes , so
We know that 30 minutes is equal to 0.5 hours
By the formula ,
Distance = Speed × Time
putting the values given , we get
= 400×0.5
Distance = 200 miles