A train travels 210 km in 3 hours and 270 km in 4 hours.find the average speed of train.	Choose the correct choice from the following answers
A) 80 kmph
B) 69 kmph
C) 70 kmph
D) 90 kmph
E) None of these
As we know that Speed = Distance / Time   for average speed = Total Distance / Total Time Taken   Thus, Total Distance = 210 + 270= 
<gadget id="calculator">210 + 270</gadget>
<output>480</output>
480 km   Thus, Total Speed= 7hrs   or,Average Speed = 480/7   or, 69kmph.   ANSWER:69 kmph
<result>B</result>
A train travels 210 km in 3 hours and 270 km in 4 hours.find the average speed of train.