A car travels uphill at 30 km/hr and downhill at 80 km/hr. It goes 100 km uphill and 50 km downhill. Find the average speed of the car? Options:
A) 38kmph
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=50/80=5/8;   avg speed=150/(10/3+5/8)=38kmph   38kmphNSWER:38kmph
<result>A</result>
A car travels uphill at 30 km/hr and downhill at 80 km/hr. It goes 100 km uphill and 50 km downhill. Find the average speed of the car?