1.

Rahul travels first 50 km at 10 kmph, next 40 km at 20 kmph and then next 60 km a 15 kmph.Find his average speed for the whole journey.​

Answer»

SPEED = DISTANCE /TIME

1) s1/t1= 50/10= 5 hours

2) s2/t2=40/20=2 hours

3) s3/t3=60/15=4 hours

Average Speed= TotalDistance/Totaltimetaken

s1+s2+s3/t1+t2+t3

50+40+60/5+2+4 = km/hr

150/11= 13.6363636364

approximately 13km/hr

ANS= 13.6363636364

MEANS APPROX. = 13KM/HR

HOPE THE ANSWER WILL HELP YOU



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