Question

a car travelled at 60km/h for 4 hrs and then at 90km/h for next 2 hrs. find its average speed

Answer 1

Answer:

150/4 km/h

or 375/36 m/s

Answer 2

Answer:

average speed = total distance covered / total time taken

first= 60×4= 240kmin 4 hours

second= 90×2= 180km in 2 hours

average speed = 240+180/4+2

=>420/6

=>70km/hrs