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 8 km, if the person completes half of the distance by walking and the other half by running?
Options
A) 0.5  B) 1.5  C) 2.5  D) 3.5  E) 4.5
time = 4/4 + 4/8 = 12/8= 
<gadget id="calculator">12/8</gadget>
<output>3/2 = around 1.5</output>
1.5 hours   The answer is 1.5.
<result>B</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 8 km, if the person completes half of the distance by walking and the other half by running?