A person travels from P to Q a speed of 40 km/hr and returns by increasing his speed by 50%. What is his average speed for both the trips?	Select:  A) 27 km/hr  B) 28 km/hr  C) 48 km/hr  D) 19 km/hr  E) 10 km/hr
Speed on return trip = 150% of 40   = 60 km/hr.   Average speed = (2 * 40 * 60)/(40 + 60)= 
<gadget id="calculator">(2 * 40 * 60)/(40 + 60)</gadget>
<output>48</output>
48 km/hr.   Answer:48 km/hr
<result>C</result>
A person travels from P to Q a speed of 40 km/hr and returns by increasing his speed by 50%. What is his average speed for both the trips?