Question

an aeroplane covers a distance of 2500 kil rate of 500 kilometre per hour 400 kilometre per hour and 250 kilometre per hour find the average speed of the plane​

Answer 1

Answer:

The speeds of the aeroplanes are = 500km/hr, 400 km/hr. 250 km/hr

Distances travelled are = 2500 km, 1200 km, 5500 km

Hence times taken are = 2500/500 , 1200/400 , 5500/250

Total time taken = 5 hrs. + 3 hrs. + 22 hrs.= 30 hrs.

Total distance travelled = 9200 km.

Hence, average speed of the aeroplane = 9200/30 = 306.66 km/hr.