Question

A car travels first 30 km at a uniform speed of 60 kilometre per hour and then next 30 kilometre with a uniform speed 40 kilometre per hour calculate the total time of journey calculate the average speed of the car

Answer 1

Answer:

Hence Average Velocity is 48km/hr and total time of journey = 5/4 hours. or Total Time Taken = 60/48 = 5/4 Hrs .

I think it's right.

Answer 2

speed = distance / time

speed×time= distance

time= distance / speed

we have to find a the time

a car travel at first time

distance 30kmper hrs

speed 60 km per hrs

time = distance/ speed

=. 30/60

= 0.5hrs

a car travel second time

distance 30km

speed 40km per hrs

time= distance/ time

= 30/40

= 0.75 hrs