Question

A car with speed 60 km/hr takes 8 hours to travel some distance. What should be the increase in the speed if the same distance is to be covered in 7.5 hours?

Answer 1

hey dear
here is your answer

speed = distance/time

60 = DISTANCE/8

DISTANCE = 480 km

now, if the same car cover 480 km in the 7.5 hours than speed of the car should be

speed = 480/7.5

speed = 64 km/hr

hope it helps :)

Answer 2

Answer:

Increase in speed = 4 km/Hr

Step-by-step explanation:

A car with speed 60 km/hr takes 8 hours to travel some distance. What should be the increase in the speed if the same distance is to be covered in 7.5 hours?

Let say Distance = D km

Speed = 60 km/hr

Time taken = 8 hours

Distance = Speed * Time

=> D = 60 * 8

=> D = 480

Distance = 480 km

Let say increased in speed = S km/Hr

New Speed would be then = 60 + S km/Hr

New Time taken = 7.5 hrs

=> 480 = (60 + S) * 7.5

=> 480 = 450 + 7.5S

=> 30 = 7.5S

=> S = 4

Increase in speed = 4 km/Hr