A car was driving at 50 Km/h for 30 minutes, and then at 90 Km/h for another 40 minutes. What was its average speed?	Choose the correct choice from the following choices:	A) 102	B) 80	C) 75	D) 70	E) 65
driving at 50 Km/h for 30 minutes ,distance covered = 50*1/2= 
<gadget id="calculator">50*1/2</gadget>
<output>25</output>
25 km   driving at 90 km/h for 40 minutes ,distance covered= 90*2/3= 
<gadget id="calculator">90*2/3</gadget>
<output>60</output>
60 km   average speed= total distance/total time = 85/5/6 = 102 km/h   102nswer: 102
<result>A</result>
A car was driving at 50 Km/h for 30 minutes, and then at 90 Km/h for another 40 minutes. What was its average speed?