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 ?
Choose the correct choice from the following
A) 43
B) 25
C) 48
D) 50
E) 62
Speed = 40 km/hr   Return= 150% of 40 = 60 km/hr   avg = 2xy/x+y   =2*40*60/40+60 = 4800/100   == 48 km/hr   ANSWER 48
<result>C</result>
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 ?