A car travels uphill at 30 km/hr and downhill at 60 km/hr. It goes 100 km uphill and 50 km downhill. Find the average speed of the car?
Pick one.
A) 32kmph B) 33kmph C) 34kmph D) 35kmph E) 36kmph
avg speed=total distance/total time.   total distance traveled=100+50= 
<gadget id="calculator">100+50</gadget>
<output>150</output>
150km;   time taken for uphill journey=100/30=10/3;   time taken for down hill journey=50/60=5/6;   avg speed=150/(10/3+5/6)= 
<gadget id="calculator">150/(10/3+5/6)</gadget>
<output>36</output>
36kmph   ANSW36kmphR:36kmph
<result>E</result>
A car travels uphill at 30 km/hr and downhill at 60 km/hr. It goes 100 km uphill and 50 km downhill. Find the average speed of the car?