a car covers the first half of the distance between two places at the speed of 40km/h and the second half at 60km/h.what is average speed of the car? ans is 48km/h how it will come
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average speed= total distance travelled/ total time take
let's assume total distance travelled is 240km just for simplification
so time taken to travel first half
time=distance/speed =120/40=3hr
time taken to trave 2nd half
time2=120/60=2hr
average speed=240km/2hr+3hr=48km/he
you can solve this for X km but have to do not of calculation.
let's assume total distance travelled is 240km just for simplification
so time taken to travel first half
time=distance/speed =120/40=3hr
time taken to trave 2nd half
time2=120/60=2hr
average speed=240km/2hr+3hr=48km/he
you can solve this for X km but have to do not of calculation.
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