A bullock cart has to cover a distance of 80km in 10hrs. If it covers half of the journey in 3/5th time. what should be its speed to cover the remaining distance in the time left.	Choices:
A) 10 kmph
B) 20 kmph
C) 30 kmph
D) 40 kmph
E) 50 kmph
10 kmph   10 kmph   Time left = 10 - 3/5*10= 
<gadget id="calculator">10 - 3/5*10</gadget>
<output>4</output>
4 hr 10 km/h   speed=40 km /4 hr   =10 kmph
<result>A</result>
A bullock cart has to cover a distance of 80km in 10hrs. If it covers half of the journey in 3/5th time. what should be its speed to cover the remaining distance in the time left.