Question

A car travels first 30km with a uniform speed of 60 km h and the next 30km with a uniformspeed. of 40kmh calvulate is the total time of journey and the average speed of yhe car with method​

Answer 1

Answer:
Average Velocity is 48km/hr and total time of journey = 5/4 hours. or Total Time Taken = 60/48 = 5/4 Hrs.
Hope it helps!!

Answer 2

Answer:

total time travel cover first 30km

s=d/t

t=30/60

time=1/2

time to travel next 30km

s=d/t

t=30/40

t=3/4

total time =1/2+3/4=5/4 hours

total distance =30+30=60km

average speed=60/5/4= 48km/hr

average speed=48km/h

total time=5/4 hour

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