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?
Answers
A) 50 kmph  B) 65 kmph  C) 75 kmph  D) 85 kmph  E) 90 kmph
Explanation:   S = (90 + 60)/2= 
<gadget id="calculator">(90 + 60)/2</gadget>
<output>75</output>
75 kmph   75 kmph)
<result>C</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?