RRB Group-D Model Paper 15 with answers for online practice

Given:
Distance = 540km, Speed of the slower car = 90km/hr, faster car take 1 hour less then slower car to cover the same distance.
Formula:
Distance = speed × time
Calculation
Time taken by slower car = Distance/speed
⇒ Time = 540/90 = 6hrs
∴ Fast car takes 5 hour to cover the distance
∴ Speed = 540/ 5 = 108 km/hr