A man walks at a speed of 3 km/hr and runs at a speed of 6 km/hr. How much time will the man require to cover a distance of 12 km, if he completes half of the distance, i.e., (6) km on foot and the other half by running?  Select the correct option:  A) 2.6  B) 2.2  C) 2.5  D) 2  E) 3
Required time = (6)/3 + (6)/6= 
<gadget id="calculator">(6)/3 + (6)/6</gadget>
<output>3</output>
3 hours.   Answer:3
<result>E</result>
A man walks at a speed of 3 km/hr and runs at a speed of 6 km/hr. How much time will the man require to cover a distance of 12 km, if he completes half of the distance, i.e., (6) km on foot and the other half by running?