Speed on return trip=150% of 40 = 60 kmph.Average speed =(2 x 40 x 60/40+60)km/hr= (4800/100)km/hr= 48 km/hr.
Aptitude
Topic: Time and Distance
A person travels from P to Q at a speed of 40 km/hr and returns by increasing his speed by 50%. What is his average speed for both the trips? A. 36 kmph B. 45 kmph C. 48 kmph D. 50 kmph
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