Rajasthan Police Constable Model Paper 4

Detailed Solution:
GIVEN:
By cycle:
Distance = 15 km
Speed = 5 km/hr
By bike:
Distance = 30 km
Speed = 15 km/hr
FORMULA USED:
Speed = Distance / Time
CALCULATION:
⇒ Distance covered by cycle @ 5 km/hr = 15 km
⇒ Time taken in this journey = 15/5 = 3 hours
⇒ Distance covered by bike @ 15 km/hr = 30 km
⇒ Time taken in this journey = 30/15 = 2 hours
⇒ Total time = 5 hours
⇒ Total distance = 45 km
⇒ Average speed = 45/5 = 9 km/hr