A car travels first half distance between two places with a speed of 40 kmph and the rest half distance with a speed of 60 kmph. The average speed of the car is Answers
A) 48 kmph B) 37 kmph C) 44 kmph D) 45 kmph E) None of these
we know that speed = distance traveled/time taken   let the total distance traveled by the car is 2x km.   then time taken by it to cover first half is x/60 hour.   and for second half is x/40 hour.   then average speed= total distance traveled/ total time   taken.   =2x/[(x/60) + (x/40)]   =2x/[5x/120] (on simplification)   =48 kmph   48 kmphNSWER:48 kmph
<result>A</result>
A car travels first half distance between two places with a speed of 40 kmph and the rest half distance with a speed of 60 kmph. The average speed of the car is