A person has to cover a distance of 6km 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 must be?
Select the correct option:
A) 12km per hr
B) 10km/hr
C) 15km/hr
D) 20km/hr
E) 18km/hr
Remaining distance = 3km   Remaining time = 1/3 * 45= 
<gadget id="calculator">1/3 * 45</gadget>
<output>15</output>
15min= 1/4 hour   Required speed = 3*4= 
<gadget id="calculator">3*4</gadget>
<output>12</output>
12km/hr   12km per hrnswer is 12km per hr
<result>A</result>
A person has to cover a distance of 6km 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 must be?