The speed of a car is 90 km in the first hour and 60 km in the second hour. What is the average speed of the car?	Choices: A) 76 kmph B) 75 kmph C) 87 kmph D) 56 kmph E) 86 kmph
S = (90 + 60)/2= 
<gadget id="calculator">(90 + 60)/2</gadget>
<output>75</output>
75 kmph   Answer: 75 kmph
<result>B</result>
The speed of a car is 90 km in the first hour and 60 km in the second hour. What is the average speed of the car?