Question

a car travels a certain distance in 30mins with average speed of 60km /hr. what will be the speed of car to cover same distance in 20 mins.​

Answer 1

Answer:

90km/hr

Step-by-step explanation:

Speed = distance / time

1st case

60km/hr = distance / 0.5hr

(as speed is in hr convert distance to hrs 30min/60 = 0.5 hrs )

=> 60 * 0.5 = distance

=> distance = 30 km

2nd case

speed = d/t

Speed = 30km / 0.3333

( converstion to hrs 20min / 60 = 0.3333 )

=> Speed = 90km/hr