A person has to cover a distance of 6 km in 45 minutes. If he covers one-half of the distance in two-thirds of the total time; to cover the remaining distance in the remaining time, his speed?.
Select the correct option:
A) 6kilometer/hour	B) 8kilometer/hour	C) 12kilometer/hour	D) 15kilometer/hour	E) None of these
Remaining distance = 3km and remaining time = (1/3*45)= 
<gadget id="calculator">(1/3*45)</gadget>
<output>15</output>
15minutes=1/4hour.   Required speed=(3*4)kilometer/hour=12km/hour.   12kilometer/hourorrect Option: 12kilometer/hour
<result>C</result>
A person has to cover a distance of 6 km in 45 minutes. If he covers one-half of the distance in two-thirds of the total time; to cover the remaining distance in the remaining time, his speed?.