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A cars covers a distance of 2 km in 2.5 minutes . If it covers half of the distance with speed 40 km/HR the rest distance it shall covers with what speed
2 km= 2.5 min = 150 s half distance i,e 1 km speed is 40 km/hr for 1km it takes 60*60/40 = 90 s total time taken = 150 s for first half distance = 90 s then therest will be 150 s – 90 s =60 s
given;distance=2.kmtime=2.5minutes=0.041 hralso givenhalf of distance ii.e 1km is travelled with speed 40 km/hrwktspeed=distance/timetime=distance/speed=1/40=0.025..nowtime taken to complete rest of the journey =0.041-0.025=0.016 hrnow,speed=1/0.016=62.5km/hr ~ 60 km/hr
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