A person walks at a speed of 4 km/hr and runs at a speed of 8 km/hr. How many hours will the person require to cover a distance of 16 km, if the person completes half of the distance by walking and the other half by running?	Choose the correct choice:  A) 2  B) 2.5  C) 3  D) 3.5  E) 4
time = 8/4 + 8/8= 
<gadget id="calculator">8/4 + 8/8</gadget>
<output>3</output>
3 hours   The answer is 3.
<result>C</result>
A person walks at a speed of 4 km/hr and runs at a speed of 8 km/hr. How many hours will the person require to cover a distance of 16 km, if the person completes half of the distance by walking and the other half by running?