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 choices:  A) 44 km/hour  B) 46 km/hour  C) 48 km/hour  D) 50 km/hour  E) None of these
Explanation:   Speed while going = 40 km/hr   Speed while returning = 150% of 40 = 60 km/hr   Average speed =   2xy /x+y   =2∗40∗60 /40+60=4800/100= 
<gadget id="calculator">4800/100</gadget>
<output>48</output>
48Km/hr   Option 48 km/hour
<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 ?