Question

A journey by car takes 48 mins at 65 km /hr . how fast must the car go to finish the journey in 40 mins​

Answer 1

Step-by-step explanation:

Time tajen by car to complete journey = 48 min

speed of car = 65 km/h

we know

speed= timeDistance

65=(6048)D

D=65×6048=52km

∴ speed of car to cover this distance in 40 min

speed=(6040)52=4052×63=26×3

speed = 78 km/h