Priya is driving at an average speed of 60 km/hr. She
reaches her friend's house in 20 minutes. On her way
back, she takes 30 minutes to reach home. Find her
average speed on her return journey.
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Step-by-step explanation:
for going journey
average speed = 60 km/hr
time=20 mins=20/60=1/3 hr
return journey
time =30 mins=30/60=1/2hr
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