Question

Anju take 15 minutes to go to the school and 20 minutes to come back from school by bicycle
If school is 4.5 km away from home, find his average speed​

Answer 1

Answer:

1. distance=4.5*2=9 km t1=15/60=1/4 hour t2=20/60=1/3 hour t=t1+t2=1/4+1/3=7/12 hour average speed= total d/total t=9/(7/12)=15.43 km/hr=4.29m/s