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?
Options
A) 75 B) 72 C) 30 D) 80 E) 50
Explanation:   speed= Distance/ Time   S = (90 + 60)/2= 
<gadget id="calculator">(90 + 60)/2</gadget>
<output>75</output>
75 kmph   75nswer: 75
<result>A</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?