Explanation: Speed = Distance ÷ Time = 180 ÷ 3 = 60 km/h.
Revision topic: CSAT quantitative aptitude. This is an original practice question, not an exact previous-year question.
#UPSCPrelims #CSAT #UPSCMCQ #QuantitativeAptitude #SpeedDistanceTime #CivilServicesPreparation #CSATPractice #UPSCPreparation