A car during its journey travels 30 minutes at a speed of 30 kmph, another 30 minutes at a speed of 60 kmph, and 1 hours at a speed of 80 kmph.The average speed of the car is	Options: A) 63.07 kmph B) 64 kmph C) 62.5 kmph D) 64.02 kmph E) None of these
First car travels 30 min at speed of 30 kmph   distance = 30 x 1/2 = 15 m   Then car travels 30 min at a speed of 60 kmph   distance = 30 min at speed of 60 kmph   distance = 60 x 1/2 = 30 m   at last it travels 1 hours at speed of 80 kmph   distance = 80 x 1 = 80 m   Total distance = 15 + 30 + 80= 
<gadget id="calculator">15 + 30 + 80</gadget>
<output>125</output>
125   Total time= 1/2 + 1/2 + 1= 
<gadget id="calculator">1/2 + 1/2 + 1</gadget>
<output>2</output>
2   Average speed of the car= 125/2= 
<gadget id="calculator">125/2</gadget>
<output>125/2 = around 62.5</output>
62.5   ANSWER:62.5 kmph
<result>C</result>
A car during its journey travels 30 minutes at a speed of 30 kmph, another 30 minutes at a speed of 60 kmph, and 1 hours at a speed of 80 kmph.The average speed of the car is