Question

a bus covers 30 kilometre with a uniform speed of 60 kilometre per hour and next 30 kilometre with a uniform speed of 40 kilometre per hour find the total time taken and average speed of the bus​

Answer 1

time = distance/speed

= 30/60 + 30/40

= 1/2 + 3/4

= (2+3)/4 =5/4 hours = 75minutes

average speed = to. distance/to. time

= (30 + 30) / (5/4)

= 60 × 4/5 = 48kmph