Question

at a certain speed of car takes 4 hours to complete a journey of 252 km time taken by a car to cover a journey of the speed of the car is decreased by 9 kilometre per hour​

Answer 1

Given that:-

→t=4hr →s=252km

Finding speed of the car:-

→v=s/t

→v=252/4

→v=63km/hr

→→According to the question;

v-9=v′

63-9=v′=54km/hr

Time Taken = s/v

→252/54

→4.66hr

Hope it helps✌

MARK AS BRAINLIEST.