Sri travels the first 6 hours of his journey at 40 mph speed and the remaining 3 hours at 20mph speed. What is the average speed of Sri's travel in mph?
Choose the correct choice from the following choices: A) 33.3mph B) 33.8mph C) 32.3mph D) 34.3mph E) 33.1mph
Explanation :   Average speed=Total Distance/Time.   Total distance travelled by sri = Distance covered in the first 6 hours + Distance covered in the next 3 hours.   Distance covered in the first 6 hours = 6Ã—40=240 miles   Distance covered in the next 3 hours= 3Ã—20=60 miles   Therefore, total distance travelled = 240+60= 
<gadget id="calculator">240+60</gadget>
<output>300</output>
300 miles.   The total time taken= 6+3= 
<gadget id="calculator">6+3</gadget>
<output>9</output>
9hours.   Hence, the average speed=300/9= 33.3mph.   33.3mphnswer : 33.3mph
<result>A</result>
Sri travels the first 6 hours of his journey at 40 mph speed and the remaining 3 hours at 20mph speed. What is the average speed of Sri's travel in mph?