Priya covers journey from kavali to nellore by car at average speed of 80 Km/hr. She returns back by scooty with an average speed of 40 Km/hr. Find her average speed during the whole journey? Choose the correct choice from the following choices.
A) 50Km/hr
B) 53.33Km/hr
C) 60Km/hr
D) 66Km/hr
E) 72km/hr
Explanation:   Average speed = 2 xy/x+y   = 2*80*40/120   = 53.33 Km/hr   Answer: Option 53.33Km/hr
<result>B</result>
Priya covers journey from kavali to nellore by car at average speed of 80 Km/hr. She returns back by scooty with an average speed of 40 Km/hr. Find her average speed during the whole journey?